pi -- 2 / | | sin(3*x) dx | / 0
Integral(sin(3*x), (x, 0, pi/2))
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 sine is negative cosine:
So, the result is:
Now substitute back in:
Add the constant of integration:
The answer is:
/ | cos(3*x) | sin(3*x) dx = C - -------- | 3 /
Use the examples entering the upper and lower limits of integration.