1 / | | 3 4 | cos (5*x)*sin (5*x) dx | / 0
Integral(cos(5*x)^3*sin(5*x)^4, (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 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:
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:
Add the constant of integration:
The answer is:
/ | 7 5 | 3 4 sin (5*x) sin (5*x) | cos (5*x)*sin (5*x) dx = C - --------- + --------- | 35 25 /
7 5 sin (5) sin (5) - ------- + ------- 35 25
=
7 5 sin (5) sin (5) - ------- + ------- 35 25
-sin(5)^7/35 + sin(5)^5/25
Use the examples entering the upper and lower limits of integration.