2000e^(-x^2/20)
8 / | | 2 | -x | ---- | 20 | 2000*E dx | / 0
Integral(2000*E^((-x^2)/20), (x, 0, 8))
The integral of a constant times a function is the constant times the integral of the function:
Don't know the steps in finding this integral.
But the integral is
So, the result is:
Add the constant of integration:
The answer is:
/ | | 2 | -x | ---- / ___\ | 20 ___ ____ |x*\/ 5 | | 2000*E dx = C + 2000*\/ 5 *\/ pi *erf|-------| | \ 10 / /
/ ___\ ___ ____ |4*\/ 5 | 2000*\/ 5 *\/ pi *erf|-------| \ 5 /
=
/ ___\ ___ ____ |4*\/ 5 | 2000*\/ 5 *\/ pi *erf|-------| \ 5 /
2000*sqrt(5)*sqrt(pi)*erf(4*sqrt(5)/5)
Use the examples entering the upper and lower limits of integration.