Question

∫sin⁡(1/2* π*t^2)

Answer 1

http://www.wolframalpha.com/input/?i=int%28sin%E2%81%A1%281%2F2*pi*t^2%29dt

Answer 2

\[\huge \int\limits \sin(\frac{\pi t^2}{2}) dt=\frac{2\pi t}{2}\cos(\frac{\pi t^2}{2})+ C\]
\[\huge =\pi t\cos(\frac{\pi t^2}{2})+ C\]

Answer 3

Oops sorry forgot the minus sign.
\[\huge -\pi tcos(\frac{\pi t^2}{2})+C\]

Answer 4

@Azteck, you use substitution, right? ahh...i got it...thanks a lot both of you... ^_^