1 / | | 2*sin(4*x) dx | / pi -- 4
Integral(2*sin(4*x), (x, pi/4, 1))
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 sine is negative cosine:
So, the result is:
Now substitute back in:
So, the result is:
Add the constant of integration:
The answer is:
/ | cos(4*x) | 2*sin(4*x) dx = C - -------- | 2 /
1 cos(4) - - - ------ 2 2
=
1 cos(4) - - - ------ 2 2
-1/2 - cos(4)/2
Use the examples entering the upper and lower limits of integration.