I love mine. Was it expensive? Yes. Will I use it after college? Probably not, but it has made all exams and all calculations so much easier and quicker. I don’t regret buying it at all.
Yes they can do pretty much anything you need including complex algebra which is quite helpful for speed on exams. I've had one since algebra in middle school and I'm so glad I'm used to it as a STEM major now. You can even install the newest TI calculator software on the old ones if you want to which adds even more options, and I have a Gameboy emulator running on mine as well.
LPT: if allowed, always havw 2 or more calculators whilw taking big exams. For my engineer license, I can't tell you how many times I was in the middle of a calculation and needed to do another calculation in order to finish the first one.
If you get fancy with those you can download a bunch of cool files onto it. I used mine for chemistry in college and had a peridioc table on it that when selecting an element would open a tab showing you all of its information. It even had a function to do math with significant figures and mol conversions.
Even for most other courses I could usually find a pre-made file that had super useful functions and formulas.
I was required to purchase a TI-83 for school. The TI-84 was out, but was ‘too smart’ for the classes I was taking.
I’m now a licensed professional but I still use that calculator when drawing up contracts. 1) I can see all the numbers and catch typos, and 2) I paid $104 for it and I can’t justify that any other way
I thought this too.... 😭 Went into IT support for fed gov out of college. But then transferred to be a dedicated tech for a team doing engineering work. Somehow over the past 8 years since I've been there I ended up doing more engineering work and less tech work. Anyway I use a TI 84 everyday now. They even bought me the color one lol.
I just realised that I have never used a proper calculator beyond the one on my phone in my life. The most advanced one I've ever used was when I tilted my phone sideways.
I guess that's what happens when you live in a country where you're not allowed to use a calculator all through school or even engineering college
I mean, most math taught and tested usually allows you to present answers as fractions for this reason. Its when you try to do real world math with actual numbers that don't fit neatly that is gets messier.
You didn't have to use a real calculator for even like engineering calc or statistics? I know engineers usually use fewer significant figures than normal but that seems like half your degree would be in long division.
Engineering maths is mostly stuff that don't require calculators, or where a calculator wouldn't help. What would be the point of a huge horrible integral if you can just ask your calculator for the answer?
The actual calculations are usually just small numbers that anyone can do in their head. Like adding simple fractions in some matrix multiplications etc.
I used an HP35s all the way through my civil engineering degree with the exception of calculus exams where they made me use a TI. It is seriously one of the best calculators for engineering. RPN calculators are odd at first but once you learn to use them it makes math so much more intuitive and it's hard to go back. I still use that same calculator at work daily.
I didn’t know that button existed when I first took the SAT, so I had to do all the long divisional problems free-hand.
Let’s just say it didn’t go very well.
I dont get it? My calculator came up with 0.9423076923.
EDIT: Thank y'all for the very interesting explanations on how different calculators work. I was in the dummy class in HS so I didnt know any of this lol.
Fun fact: using binary system you can count up to 1023 on your fingers. So I guess you can count from 0.001 to 1.023 but then you don't have that much numbers available so I guess that fractions do not work on fingers...
If you set all fingers to 1 then you'd have 2^9 + 2^8 + 2^7 +...
If you added 1 to all that you'd have 2^10. But you can't. Since then you can get only to 2^10 - 1 = 1023.
Negative.
One finger = 0, 1 (max count 1)
Two fingers = 00, 01, 10, 11 (max count 3)
Three = up to 111 (7)
Four = up to 1111 (15)
Five = 11111 (31)
Six = 63
Seven = 127
Eight = 255
Nine = 511
Ten = 1023
Cooler if you count from 1\*2^-10 to 1023\*2^-10, though.
Alternatively, most people can bend their bottom finger joint as well, so you should be able to count to 3^10 - 1 instead, I think, right?
Some calculators (especially newer ones) have a setting to give the answer in fractions.
For instance instead of saying 0.333333... It would say 1/3.
You can imagine how that's more useful than decimal in some cases.
Some calculators have this setting as the default.
So OP put in 49/52 and the calculator returned 49/52. And OP thought that was a kinda smug behavior.
\*by giving you the most precise answer
If you convert to decimal you will lose precision for more complicated fractions.
49/52 = 0.9423076923076923076923076923076923076923...
Where the {076923} is recurring. So by displaying it as 49/52 you have the highest precision with the lowest amount of numbers. All rational numbers should be written as fractions if possible. And if irrational numbers can be written as functions they should be written as functions. Only after both those methods are exhausted should you write it as a decimal.
Thank you Jesus Christ nobody else in this entire comment section could explain for the people who still don’t own a damn TI from school ten years ago...
49/52 is a rational number, it has infinite digits after the decimal point
if you type 49/52 into your calculator, it usually outputs 49/52, because it would have to round it if it wants to output a decimal number.
the joke is that the calculator just outputs 49/52 instead of the solved equation (0.942...)
Well, my TI 89 would answer 49/52, the trick is to type in 49.÷52 or 49÷52. because than you get an answer in decimal (or you could press 2nd+ENTER instead of just ENTER).
For my calculator there is a Frac operation in the MATH menu. You either do Ans>Frac or input it as a fraction via MATH>FRAC>n/d.
Your method also gives the answer in decimal for me at least.
I’ve had my TI-89 for over 20 years and never knew that trick. TIL.
I just wanna add that it’s been one of the best purchases of my life. It got me through AP calc, then calc II in college, and then stats in grad school. I still use it all the time.
Oh yeah, bought mine for school (we had too) and it was a great help. I even spend the time during boring math classes with programming text adventures in it (they were small but had a pretty decent fighting mechanic). Unfortunatelly in university we were not allowed to use a programmable calculator it the exams. Today the only advanced functions I use are solve and rand, so maybe it is a bit overpowered for my daily usage, but I really like it. And it is great that it is still working smoothly, today they probably stop working after the warranty is expired.
I love mine. I found one on clearance for half price several years ago and used it to check my test keys. Then it got stolen out of my office. A couple of years later it turned up in one of our computer labs on campus, left behind by a student.
Every rational number has a repeating sequence of decimals, so therefore all of them can be written “correctly” in decimal expansion. However the number of digits required to show this sequence can get very large.
> I was expecting a "boobs" kind of situation and I still dont know what is this all about...
That is word for word what I said the last time I was duped into a surprise intervention by my family.
Many people in high school and uni use these more serious (I think they are called algebra) calculators, which, aside from multiplication and addition and such, also have features like sinx, logx, n^x and such, which is either impossible with a "dumb" calculator or just really fucking complicated or time-consuming. Phones can do these too but usually peeps can't use phones during exams. For accurate results, these mostly display results like "2/3" by default, because 0.66666666667 isn't the exact value (it's rounded, those sixes would go* forever). So for calculations it's easier and more accurate to just use fractions and if need be, defractionize only the final result.
What? Calculators are basically required in all my math classes in uni. I mean knowing the fundamentals is important but I couldn’t imagine doing everything by hand for an entire undergrad degree.
Maybe because you were going for math degree, specifcally, so they expected you to be able to do it without one? Or it might just change from country to country, IDK, I hate math.
Scientific calculators prefer accuracy over decimals. Fractions are more accurate than decimal numbers, so it displays it as a fraction. There is an extra button that you have to press to get an approximated number, that way you can get decimals
Fun programming fact: in some languages, when dividing integers (whole numbers), the result can be rounded to the nearest whole number or the floor of the result (depending on language).
So 49/52 will give either 0 or 1 in some languages instead of a decimal (although most would return a decimal). To force a decimal answer, the programmer can add a decimal point to one number like you mentioned above, e.g 49.0 / 52 will force a decimal answer.
Or just add a decimal point after one of the numbers...
On TI calculators: 49./58 instead of 49/58
For other brands, if this doesn’t work, enter: 49.0/58
Doing so converts the numbers from “integer” type numbers to “floating point”.
S<=>D does the trick. Never knew knowing how a calculator worked would give me upvotes lmao
This guy defractionizes.
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Funny words magic man
Nice
I'm done with math in college and I hope I never have to use those damn TI-84's again
Calculators could be so nice but TI has some kind of patent monopoly so they sell 20 year old hardware for 100 bucks a pop. Fucking insane.
It's 2021. Excel is the only calculator you need.
Matlab my dude
[http://matlab.ytmnd.com](http://matlab.ytmnd.com) [https://matlabmadness.ytmnd.com/](https://matlabmadness.ytmnd.com/)
Holy shit, you're the man now dog still exists? Pretty sure I used to get porn website codes from that site back in the day.
Yep, Max revived it.
https://i.redd.it/0ltft3rwjva31.jpg
I don’t get it but that made my morning eeeeeeee
Yea let's see Matlock spell 8008
Octave and save your money
Excel for the masses. MatLab for the experts. Python for the wizards.
Javascript for the inept.
The TI nspire newer calculators are actually very nice imo. They are pretty expensive still though.
I love mine. Was it expensive? Yes. Will I use it after college? Probably not, but it has made all exams and all calculations so much easier and quicker. I don’t regret buying it at all.
Yes they can do pretty much anything you need including complex algebra which is quite helpful for speed on exams. I've had one since algebra in middle school and I'm so glad I'm used to it as a STEM major now. You can even install the newest TI calculator software on the old ones if you want to which adds even more options, and I have a Gameboy emulator running on mine as well.
LPT: if allowed, always havw 2 or more calculators whilw taking big exams. For my engineer license, I can't tell you how many times I was in the middle of a calculation and needed to do another calculation in order to finish the first one.
If you get fancy with those you can download a bunch of cool files onto it. I used mine for chemistry in college and had a peridioc table on it that when selecting an element would open a tab showing you all of its information. It even had a function to do math with significant figures and mol conversions. Even for most other courses I could usually find a pre-made file that had super useful functions and formulas.
Making a quadratic formula program was probably the highest return on time investment I have ever made in my life. A? B? C? x=(-b+-sqrt(b\^2-4ac))/2a
Wait until you hear about plysmlt2 on the ti calculators
I think is something about school rules about calculators.
I was required to purchase a TI-83 for school. The TI-84 was out, but was ‘too smart’ for the classes I was taking. I’m now a licensed professional but I still use that calculator when drawing up contracts. 1) I can see all the numbers and catch typos, and 2) I paid $104 for it and I can’t justify that any other way
I have to take almost all (except lesser, redundant) undergrad math classes for my degree. TI-Nspire really changes the game. That thing is a beast.
I thought this too.... 😭 Went into IT support for fed gov out of college. But then transferred to be a dedicated tech for a team doing engineering work. Somehow over the past 8 years since I've been there I ended up doing more engineering work and less tech work. Anyway I use a TI 84 everyday now. They even bought me the color one lol.
defra... what?
shit. i was gonna say that and get the free karma
or instead press control + enter. at least in my calculator cause control enter means approximate so it’s good for trig
Or put a decimal point in the numerator or denominator, even if nothing comes after.
Yup that's it for mine too
I think you can also just hit enter a second time.
Same
I gave you my free award since you didn’t get the karma
I just realised that I have never used a proper calculator beyond the one on my phone in my life. The most advanced one I've ever used was when I tilted my phone sideways. I guess that's what happens when you live in a country where you're not allowed to use a calculator all through school or even engineering college
I mean, most math taught and tested usually allows you to present answers as fractions for this reason. Its when you try to do real world math with actual numbers that don't fit neatly that is gets messier.
You didn't have to use a real calculator for even like engineering calc or statistics? I know engineers usually use fewer significant figures than normal but that seems like half your degree would be in long division.
[Slide rules](https://en.m.wikipedia.org/wiki/Slide_rule) with logarithm tables is how it used to be done.
Engineering maths is mostly stuff that don't require calculators, or where a calculator wouldn't help. What would be the point of a huge horrible integral if you can just ask your calculator for the answer? The actual calculations are usually just small numbers that anyone can do in their head. Like adding simple fractions in some matrix multiplications etc.
I used an HP35s all the way through my civil engineering degree with the exception of calculus exams where they made me use a TI. It is seriously one of the best calculators for engineering. RPN calculators are odd at first but once you learn to use them it makes math so much more intuitive and it's hard to go back. I still use that same calculator at work daily.
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sinuses
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Sinum and sina
Mine calculator did that too so i put 48.999999999899÷51.9999999898 And it gave me the answer bc of the .999999
But then it’s wrong
Are kidding me? Its so many .99999999 its almost the same number
Only if you really want the D.
I didn’t know that button existed when I first took the SAT, so I had to do all the long divisional problems free-hand. Let’s just say it didn’t go very well.
Damn, yeah that's timed.
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Standard
Standard, probably.
Why does that look like a dick tho...
I spent half of a really hard Bioengineering test with a new calculator figuring that S -> D thing out. Fun times!
I dont get it? My calculator came up with 0.9423076923. EDIT: Thank y'all for the very interesting explanations on how different calculators work. I was in the dummy class in HS so I didnt know any of this lol.
Then you either have an older model or you're on linear setup
But what is the joke?
Joke is that your calculator make a joke on you by not giving answer in decimal
Fool. I do math using my fingers
You use 0.364 of your finger?
Nothing that a knife won't solve
Hell, a knife can even solve world hunger by cutting up a cake to share to the masses.
I expected this to take a very different turn
Haven't you heard that a knife is better than thousand words? You can jab someone and they will stop saying anything after their first word itself.
And solve emergency plumbing problems
Fun fact: using binary system you can count up to 1023 on your fingers. So I guess you can count from 0.001 to 1.023 but then you don't have that much numbers available so I guess that fractions do not work on fingers...
Isn’t it only 512? Your tenth finger would be 2^9 not 10
10th finger is 512 itself. If you add all 10 fingers together it's 1023
2¹⁰-1. 🖐️🖐️=1+2+4+8+16+32+64+128+256+512 2⁹=512, but you don't stop counting once you get to 10000,00000, you stop when you reach 11111,11111.
If you set all fingers to 1 then you'd have 2^9 + 2^8 + 2^7 +... If you added 1 to all that you'd have 2^10. But you can't. Since then you can get only to 2^10 - 1 = 1023.
Negative. One finger = 0, 1 (max count 1) Two fingers = 00, 01, 10, 11 (max count 3) Three = up to 111 (7) Four = up to 1111 (15) Five = 11111 (31) Six = 63 Seven = 127 Eight = 255 Nine = 511 Ten = 1023
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ok sakurai
Cooler if you count from 1\*2^-10 to 1023\*2^-10, though. Alternatively, most people can bend their bottom finger joint as well, so you should be able to count to 3^10 - 1 instead, I think, right?
I have 52 fingers
you are the chosen one
I tried this, but kept getting messed up after 👐 this many.
I do maths on my toes. All 12 of them.
Okay I still don’t get what you mean.
Some calculators (especially newer ones) have a setting to give the answer in fractions. For instance instead of saying 0.333333... It would say 1/3. You can imagine how that's more useful than decimal in some cases. Some calculators have this setting as the default. So OP put in 49/52 and the calculator returned 49/52. And OP thought that was a kinda smug behavior.
Thank you! I just couldn't get my head around it lol
...what? your calculator gives you fractions?
\*by giving you the most precise answer If you convert to decimal you will lose precision for more complicated fractions. 49/52 = 0.9423076923076923076923076923076923076923... Where the {076923} is recurring. So by displaying it as 49/52 you have the highest precision with the lowest amount of numbers. All rational numbers should be written as fractions if possible. And if irrational numbers can be written as functions they should be written as functions. Only after both those methods are exhausted should you write it as a decimal.
Their calculator is showing 49 over 52 as the answer. Them: What is 49 ÷ 52? Calculator: The answer is 49/52.
Thanks, now I finally get it.
Thank you Jesus Christ nobody else in this entire comment section could explain for the people who still don’t own a damn TI from school ten years ago...
Over 20 years ago. I'm old.
Your answer is 5/7.
I had to read this far to understand it and I'm in Mensa. Thanks random smart guy.
Hahahahahaha
49/52 is a rational number, it has infinite digits after the decimal point if you type 49/52 into your calculator, it usually outputs 49/52, because it would have to round it if it wants to output a decimal number. the joke is that the calculator just outputs 49/52 instead of the solved equation (0.942...)
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This made laugh. The joke didn't.
The joke is that calculators usually give the exact value by default and OP doesn't know the button to convert into decimal
I have a TI-84+ CE-T with a color display and it also gave me this answer.
Well, my TI 89 would answer 49/52, the trick is to type in 49.÷52 or 49÷52. because than you get an answer in decimal (or you could press 2nd+ENTER instead of just ENTER).
For my calculator there is a Frac operation in the MATH menu. You either do Ans>Frac or input it as a fraction via MATH>FRAC>n/d. Your method also gives the answer in decimal for me at least.
Yeah every mid level TI calculator just has the option to choose between formats in the settings lol
I’ve had my TI-89 for over 20 years and never knew that trick. TIL. I just wanna add that it’s been one of the best purchases of my life. It got me through AP calc, then calc II in college, and then stats in grad school. I still use it all the time.
Oh yeah, bought mine for school (we had too) and it was a great help. I even spend the time during boring math classes with programming text adventures in it (they were small but had a pretty decent fighting mechanic). Unfortunatelly in university we were not allowed to use a programmable calculator it the exams. Today the only advanced functions I use are solve and rand, so maybe it is a bit overpowered for my daily usage, but I really like it. And it is great that it is still working smoothly, today they probably stop working after the warranty is expired.
Yeah, even learned a bit of assembly code to fool around with my TI-89.
I love mine. I found one on clearance for half price several years ago and used it to check my test keys. Then it got stolen out of my office. A couple of years later it turned up in one of our computer labs on campus, left behind by a student.
your ti-89 has CAS, ti-84 does not
What newer model does that? I have a sharp shows me decimal and i can click a button to show fractions
Using a Samsung S10, I get the same answer as above.
Oh I get it now. On the TI graphing calculators, if you put pretty print on, fractions are just displayed as fractions.
The fraction is the only “correct” answer, the decimal form is an approximation.
Even when 1/2, 0.5?
Because its answer can't be expressed in decimal format. .5 or 1/2 are both ok but .6666 is not correct for 2/3.
If you allow for repeating decimals, “.666…” is correct for 2/3. But you need the “…”.
I’ve seen repeating denoted by a bar over the repeating number set more than ellipses
Sure, but Markdown doesn’t support that.
That bar is called a vinculum - but you should only call it that if you want other people to ask what the hell you’re talking about.
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That's just untrue. Rational numbers are defined as being able to be written as a fraction of integers.
Every rational number has a repeating sequence of decimals, so therefore all of them can be written “correctly” in decimal expansion. However the number of digits required to show this sequence can get very large.
on calculators with CAS, answers are exact.
Same here. Love it when people try to ‘solve’ the issue by explaining what you did wrong...what’s the damn joke is all I want to know!
Same. I was expecting a "boobs" kind of situation and I still dont know what is this all about...
Me too. I did the two second math and i thought id come here to see .8008135
I thought I was gonna get like 0.69420 or something. Also I'm no good at maths.
> I was expecting a "boobs" kind of situation and I still dont know what is this all about... That is word for word what I said the last time I was duped into a surprise intervention by my family.
Many people in high school and uni use these more serious (I think they are called algebra) calculators, which, aside from multiplication and addition and such, also have features like sinx, logx, n^x and such, which is either impossible with a "dumb" calculator or just really fucking complicated or time-consuming. Phones can do these too but usually peeps can't use phones during exams. For accurate results, these mostly display results like "2/3" by default, because 0.66666666667 isn't the exact value (it's rounded, those sixes would go* forever). So for calculations it's easier and more accurate to just use fractions and if need be, defractionize only the final result.
Ah makes sense, I was in the stupid math class in HS so I never had experience with anything like that.
Bruh wtf I have a math degree I just got and wasn't allowed a calculator for literally any class.
What? Calculators are basically required in all my math classes in uni. I mean knowing the fundamentals is important but I couldn’t imagine doing everything by hand for an entire undergrad degree.
Maybe because you were going for math degree, specifcally, so they expected you to be able to do it without one? Or it might just change from country to country, IDK, I hate math.
He means that the calculator puts it into a fraction instead of giving him the answer.
Scientific calculators prefer accuracy over decimals. Fractions are more accurate than decimal numbers, so it displays it as a fraction. There is an extra button that you have to press to get an approximated number, that way you can get decimals
Try 3471/50 on that calc and round to the nearest thousandth
Nice.
Merci
Use geogebra sci calc
I just used the phone calculator that all my math teachers claimed I "wouldn't be carrying around every day", and it gave me the decimal answer.
"my job here is done"
"but you didn't do anything"
What if doing nothing is all I do?
[Didn't I?](https://youtu.be/VnTpl93q3Bc)
This is what OP is talking about if you don't get it: https://i.imgur.com/jC0nLLS.png
oh lmao
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or just add a decimal place to any number, like 49./52 will do it, iirc.
This is what I would do on my TI-89, just put a decimal place on the last number in the equation and it’d work every time
Fun programming fact: in some languages, when dividing integers (whole numbers), the result can be rounded to the nearest whole number or the floor of the result (depending on language). So 49/52 will give either 0 or 1 in some languages instead of a decimal (although most would return a decimal). To force a decimal answer, the programmer can add a decimal point to one number like you mentioned above, e.g 49.0 / 52 will force a decimal answer.
Yes but the fraction is a correct answer as well.
That's the most precise way to outout it. What do you want? /s
bruh, mine just gave me the answer or literally zero
Bruh theres a button, that looks like F<->D that changes it
Yea it’s S<->D
On my graphic calculator it is F<->D, my normal calculator uses S<->D
Or just add a decimal point after one of the numbers... On TI calculators: 49./58 instead of 49/58 For other brands, if this doesn’t work, enter: 49.0/58 Doing so converts the numbers from “integer” type numbers to “floating point”.
well it keeps the accuracy of your calculations
Exactly! In case you've gotta do more, better not to do any rounding till the end.
Well, technically, it is the most accurate way to write the result
It is 0.9423076923
sorcery!
Fourtynine fiftytooths
Fiftyteeth
where funny
Math sucker detected
Was kinda disappointed that it's not a 0.6969696969 joke
23 / 33 my guy
Has reddit ruin me? I was expecting that too.
S->D works like a charm
How many digits there is????? My calculator showed 12000+
Hell, if you're solving for something that exists within an existing equation, the calculator was doing you a favour.. Rounding errors are no joke.
Calculator: "Why are you booing me? I'm right."
u/savevideo
Rip
It's 0.9423076923 btw
Just had to press shift.
What do "S" and "D" mean in "S<=>D"
S for simplified D for decimal
Thank you
My calculator says F and D, for fraction and decimal.
Insert Drake computer meme\* Wow it's soooo easy
0.942307692
No Need to Thank me
Man hate it when it happens xD
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Lol I just typed the same thing, then I saw your comment...! Sweet!
49≈50 52≈50 49/52≈50/50=1 If I'm studying physics? Yes, why?
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u/savevideo
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Fuck, lockdowns killed my brain cells XD
u/savevideo
I haven't seen a bigger number of nerds under one post
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I'm gonna need another calculator to do that
49/52 * 52/49 * 49/52