Question

Integrate e^-x^2 from -inf to inf!

Answer 1

when integrating to undefined numbers, like infinity or asymptotes, you have to take the limit.

and i just noticed that e^(-x^2) is not an elemental function, so you can't integrate it without "complex" numerical methods

Answer 2

Actually you can :D lmao I already know the answer I just like having fun

Answer 3

how?

Answer 4

Square the integral and convert to polar (: totally had a question on it in my calculus book! Took me 20 minutes to figure it out!!!!!!!!!!!!

Answer 5

Do you know about polar coordinates?

Answer 6

ya i just remembered the jacobian is rdrdtheta