1 / | | 2 | x + 6*x + 1 | e *(x + 3) dx | / 0
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:
Now simplify:
Add the constant of integration:
The answer is:
/ | 2 | 2 x + 6*x + 1 | x + 6*x + 1 e | e *(x + 3) dx = C + ------------- | 2 /
8 e e -- - - 2 2
=
8 e e -- - - 2 2
Use the examples entering the upper and lower limits of integration.