math 

@Efi sin²(x) is usually the same as sin(x)² (and (sin(x))²).

When dealing with function/operators algebra, though, it's pretty common to have f²(x) mean f(f(x)), though.

(And yes, fuck this.)

math 

@kellerfuchs @Efi
though fⁿ(x) frequently means the nth derivative of f

math 

@confusedcharlot @Efi That's interesting, I've only seen f⁽ⁿ⁾(x) for that :O

*whines softly, is sads.*

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math 

@kellerfuchs @Efi that's more clear. maybe i was taught a bad idiom

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