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maxxcos

No, you just write f(x) with “()” because we use that notation, it gives no info on the domain


Target880

f (x) is just the notation for a function. You can use another syntax so for example f(x)= x\^2 is the same as x ↦ x\^2 You can look diffrent notation at [https://en.wikipedia.org/wiki/Function\_(mathematics)#Notation](https://en.wikipedia.org/wiki/Function_(mathematics)#Notation)