need help in integration\

how do u integrate square root of sinx.

Originally posted by The Avenger
how do u integrate square root of sinx.

so where are all the "smart" guys now, huh?

too busy in other threads telling people what they can and can't post, I imagine.

😞

Originally posted by The Avenger
how do u integrate square root of sinx.

"These integrals do not have closed forms in terms of elementary
functions, but they are reducible to elliptic integrals of the
first and second kinds.

You can find the definition of elliptic integrals in most books."

http://groups.google.co.uk/group/sci.math/msg/3087fcde6ade8786?dmode=source&hl=en

I don't know what that means unfortunately.

Originally posted by The Avenger
how do u integrate square root of sinx.

Handy website:

http://integrals.wolfram.com/index.jsp

Originally posted by Suzianne
so where are all the "smart" guys now, huh?

too busy in other threads telling people what they can and can't post, I imagine.

😞

Erm...well you've not exactly given much time for the "smart guys" to answer before writing this.

As already mentioned, that integral won't have a nice answer in terms of elementary functions.

A numerical approximation, on the other hand, is straightforward.

Originally posted by The Avenger
how do u integrate square root of sinx.

The answer is you can't

Originally posted by The Avenger
how do u integrate square root of sinx.

I input (sin x)^.5 and got an answer, its pretty long. At Intregals.wolfram.com

Originally posted by sonhouse
I input (sin x)^.5 and got an answer, its pretty long. At Intregals.wolfram.com

You'd have to use a hypergeometric function which i've never heard of

-((1+sin(x))^(1/2)*(-2*sin(x)+2)^(1/2)*(-sin(x))^(1/2)*(2*EllipticE((1+sin(x))^(1/2), 1/2*2^(1/2))-EllipticF((1+sin(x))^(1/2),1/2*2^(1/2))))/(cos(x)*sin(x)^(1/2))

Simple really.