oo / | | 2 | -x | x*E dx | / 0
Integral(x*E^(-x^2), (x, 0, oo))
Let .
Then let and substitute :
The integral of a constant times a function is the constant times the integral of the function:
The integral of the exponential function is itself.
So, the result is:
Now substitute back in:
Add the constant of integration:
The answer is:
/ | 2 | 2 -x | -x e | x*E dx = C - ---- | 2 /
Use the examples entering the upper and lower limits of integration.