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:
Add the constant of integration:
The answer is:
-1 - 3*e + 3*E
=
-1 - 3*e + 3*E
-3*exp(-1) + 3*E
Use the examples entering the upper and lower limits of integration.