1 / | | x | e *sin(2*x) dx | / 0
Integral(E^x*sin(2*x), (x, 0, 1))
Use integration by parts, noting that the integrand eventually repeats itself.
For the integrand :
Let and let .
Then .
For the integrand :
Let and let .
Then .
Notice that the integrand has repeated itself, so move it to one side:
Therefore,
Now simplify:
Add the constant of integration:
The answer is:
/ | x x | x 2*cos(2*x)*e e *sin(2*x) | e *sin(2*x) dx = C - ------------- + ----------- | 5 5 /
2 2*e*cos(2) e*sin(2) - - ---------- + -------- 5 5 5
=
2 2*e*cos(2) e*sin(2) - - ---------- + -------- 5 5 5
Use the examples entering the upper and lower limits of integration.