Possible Duplicate:
Proving $\int_{0}^{\infty} e^{-x^2} dx = \frac{\sqrt \pi}{2}$
How does one integrate $\int e^{-x^2}\,dx$? I read somewhere to use polar coordinates.
How is this done? What is the easiest way?
Possible Duplicate:
Proving $\int_{0}^{\infty} e^{-x^2} dx = \frac{\sqrt \pi}{2}$
How does one integrate $\int e^{-x^2}\,dx$? I read somewhere to use polar coordinates.
How is this done? What is the easiest way?