pi -- 2 / | | 5 | cos (x)*sin(x) dx | / 1
Integral(cos(x)^5*sin(x), (x, 1, pi/2))
There are multiple ways to do this integral.
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 is when :
So, the result is:
Now substitute back in:
Rewrite the integrand:
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 is when :
So, the result is:
Now substitute back in:
Add the constant of integration:
The answer is:
/ | 6 | 5 cos (x) | cos (x)*sin(x) dx = C - ------- | 6 /
6 cos (1) ------- 6
=
6 cos (1) ------- 6
cos(1)^6/6
Use the examples entering the upper and lower limits of integration.