1 / | | 2 | E *x*sin(x) dx | / 0
Integral((E^2*x)*sin(x), (x, 0, 1))
Use integration by parts:
Let and let .
Then .
To find :
The integral of sine is negative cosine:
Now evaluate the sub-integral.
The integral of a constant times a function is the constant times the integral of the function:
The integral of cosine is sine:
So, the result is:
Now simplify:
Add the constant of integration:
The answer is:
/ | | 2 2 2 | E *x*sin(x) dx = C + e *sin(x) - x*cos(x)*e | /
2 (-cos(1) + sin(1))*e
=
2 (-cos(1) + sin(1))*e
(-cos(1) + sin(1))*exp(2)
Use the examples entering the upper and lower limits of integration.