Question

my question is : is sin^2 x , the same as sin x^2?

Answer 1

No. One is: (sin(x))^2. The other is sin(x^2). Which is not true in general.

Answer 2

\[sinx ^{2} and (sinx)^{2}\]
are different :)

Answer 3

thanks, whats s the difference though?

Answer 4

In one, you are evaluating x and THEN squaring it. In the other, you are squaring x THEN evaluating. So for example. Let x=pi/2.
For sin(x^2)=sin((pi/2)^2)=sin(pi^2/4)=0.04305
For (sin(x))^2=(sin(pi/2))^2=(1)^2=1. Quite a considerable difference.

Answer 5

? Where do you get a 2x?

Answer 6

oh lol read her problem wrong, i saw sin(2x) and sin(x^2) nvm, just listen to malev :D

Answer 7

Haha :P

Answer 8

no sin^2(x)