1 / | | 3 | sin (x) | ------- dx | 4 | cos (x) | / 0
Rewrite the integrand:
There are multiple ways to do this integral.
Let .
Then let and substitute :
Rewrite the integrand:
Integrate term-by-term:
The integral of is when :
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:
The result is:
Now substitute back in:
Rewrite the integrand:
Let .
Then let and substitute :
Rewrite the integrand:
Integrate term-by-term:
The integral of is when :
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:
The result is:
Now substitute back in:
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 is when :
So, the result is:
Now substitute back in:
So, the result is:
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:
The result is:
Now simplify:
Add the constant of integration:
The answer is:
/ | | 3 | sin (x) 1 1 | ------- dx = C - ------ + --------- | 4 cos(x) 3 | cos (x) 3*cos (x) | /
2 2 1 - 3*cos (1) - + ------------- 3 3 3*cos (1)
=
2 2 1 - 3*cos (1) - + ------------- 3 3 3*cos (1)
Use the examples entering the upper and lower limits of integration.