1 / | | / 2 \ | \x*cos(x) + x *sin(x)/ dx | / 0
Integral(x*cos(x) + x^2*sin(x), (x, 0, 1))
Integrate term-by-term:
Use integration by parts:
Let and let .
Then .
To find :
The integral of sine is negative cosine:
Now evaluate the sub-integral.
Use integration by parts:
Let and let .
Then .
To find :
The integral of cosine is sine:
Now evaluate the sub-integral.
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:
Use integration by parts:
Let and let .
Then .
To find :
The integral of cosine is sine:
Now evaluate the sub-integral.
The integral of sine is negative cosine:
The result is:
Add the constant of integration:
The answer is:
/ | | / 2 \ 2 | \x*cos(x) + x *sin(x)/ dx = C + 3*cos(x) - x *cos(x) + 3*x*sin(x) | /
-3 + 2*cos(1) + 3*sin(1)
=
-3 + 2*cos(1) + 3*sin(1)
-3 + 2*cos(1) + 3*sin(1)
Use the examples entering the upper and lower limits of integration.