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