# tan^2(x)

• SB
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April 17th, 2008, 3:37 am

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".
• Anonymous
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April 17th, 2008, 3:37 am

• spork
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April 17th, 2008, 7:05 am

Simply put, your opinion is wrong.
The Beer Monocle. Classy.
• neksus
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April 17th, 2008, 8:52 am

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
• mathpedia
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May 28th, 2009, 8:17 am

iochinome wrote:
hey guys, i am doing math hw and i just came accross something that is asking wether tan^2(x) = tan[(x)^2], which might be doable if i knew what tan^2 meant. anybody? thanks

[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.

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