pi -- 3 / | | 2 | 4*cos (x) dx | / pi -- 6
Integral(4*cos(x)^2, (x, pi/6, pi/3))
The integral of a constant times a function is the constant times the integral of the function:
Rewrite the integrand:
Integrate term-by-term:
The integral of a constant times a function is the constant times the integral of the function:
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 cosine is sine:
So, the result is:
Now substitute back in:
So, the result is:
The integral of a constant is the constant times the variable of integration:
The result is:
So, the result is:
Add the constant of integration:
The answer is:
Use the examples entering the upper and lower limits of integration.