need calc help

[tanky321 10+ year member]

by sin2x do you mean (sin X)^2 ? if not then both are the same?

heres the integral of (sin X)^2

The integral of sin (2x) is

Those little boxes are like the division line.

The diff between sin (2x) and (sin x)^2 is that (sin x)^2 is actually (sin x)(sin x) while sin 2x is 2 times the angle.

Hope this helps

P.S- I dont think youll learn how to integrate (sin x)^2 untill calc 2. At least I wont, also see if you can get your hands on derive 6. Its a really good math program.

 

[tanky321 10+ year member]

I didnt find calc that hard, you just need to put your time into it. If you spend time on your h/w ( which I didnt) youll do just fine. Now in my case im a f*ckin idiot and am barley passing, but I understand almost everything.

 

[electronicsgeek 10+ year member]

i mean whats the diffrence between sin2x and sin(2x) like stated. the parenthese has no effect when taking integral?

 

[tanky321 10+ year member]

Im not sure if i get what your saying exactly. Sin^2 x looks like sin2x its pronouced sine squared x sin(2x) would be sin two x. if it isnt the first then yes i think there both the same.

 

[electronicsgeek 10+ year member]

alrite im not raising any powers here so stop assuming that.

what i am talking about is sin2x and sin(2x)....no powers at all

 

[tanky321 10+ year member]

I would think there both the same then

 

[ssj2xxgotenxx 10+ year member]

I'm not sure lol.
If my 1st is right....

set 2x = u

dx = 2du = dx/2

integral of sine = -cosine

= -.5cos2x

x2 by subsititution