Question

integral sin(x^2)=?

Answer 1

it's a Freshnel integral.

Answer 2

why?

Answer 3

Because there is not integral for that in elementary functions.

Answer 4

No integral*

Answer 5

I thing this the answer (-cos(x^2)/2x)+c is it right?

Answer 6

http://www.wolframalpha.com/input/?i=integral+of+sin(x^2)

Answer 7

You can expand sin(x^2) into a series and integrate it approximately

Answer 8

ok thank you

Answer 9

The expansion for sine as a series is:
\[\sum_{n=0}^{\infty}\frac{(-1)^n x^{2n+1}}{(2n+1)!}= sin(x)\]
If you replace x with x^2. You can then integrate it and approximate it.
\[\int\limits \sum_{n=0}^{\infty}\frac{(-1)^n x^{4n+2}}{(2n+1)!}dx\]