tan^2(x)

Whoa, i think i've come across the first ever post on Ozzu where i genuinely think you are all typing a load of gibberish.

I never liked mathematics*.


*i say mathematics because i know some people prefer to call it "math" and others call it "maths".

Simply put, your opinion is wrong.

Mathematics was always my favourite class
An inherent ability never hurts though.

I memorized Pi to 100 digits because I refused to use a calculator during that class (Logs kicked my ass though). I got sick of people whipping them out to figure out 3x21

[tex]Tan^2(x) = tan(x) * tan(x)[/tex]
[tex]tanx^2 = tan (x^2)[/tex]

Those two are different! One represents the 2nd power of the tangent function, and the other is the 2nd power of the argument x!

It' s the same explination like in [tex]f(x^2) and f^2(x)[/tex]. You cannot put "=" between them.

I' ll give you a short example: let x be 1. => [tex]tan^2(1) = tan(1) * tan(1)[/tex]
[tex]tan(1^2) = tan(1).[/tex]

So for what you' re saying, those two should be equivalent:
[tex]tan(1)*tan(1) = tan(1).[/tex] By dividing with tan(1) that is not null => tan(1) = 1. This is false.