1 / | | 2 | -1 - x | ------- | 1 8 | 1*--------*e dx | ______ | \/ 2*pi | / 84
Integral(1*exp(-x^2 - 1/8)/sqrt(2*pi), (x, 84, 1))
The integral of a constant times a function is the constant times the integral of the function:
ErfRule(a=-1/8, b=0, c=-1/8, context=exp(-x**2 - 1/8), symbol=x)
So, the result is:
Now simplify:
Add the constant of integration:
The answer is:
/ | | 2 | -1 - x | ------- ___ / ___\ | 1 8 ___ ____ \/ 2 |x*\/ 2 | -1/8 | 1*--------*e dx = C + \/ 2 *\/ pi *--------*erf|-------|*e | ______ ____ \ 4 / | \/ 2*pi 2*\/ pi | /
/ ___\ |\/ 2 | -1/8 / ___\ -1/8 erf|-----|*e - erf\21*\/ 2 /*e \ 4 /
=
/ ___\ |\/ 2 | -1/8 / ___\ -1/8 erf|-----|*e - erf\21*\/ 2 /*e \ 4 /
Use the examples entering the upper and lower limits of integration.