. In the second term you forgot to square it.
I understand how to do these, but I am stuck on how to solve for these 4 variables i got in these equations:
A + C = 2
B + D = 0
A + C = 0
B + D = 0
..just incase i messed up..my original equation is
integral of (2x^3)/((x^2 + 1))^2
So i did 2x^3)/(x^2 + 1)(x^2 + 1) = (Ax + B)/(x^2 + 1) +
(Cx + D)/(X^2 + 1)
I then got Ax^3 + Ax + Bx^2 + B + Cx^3 + Cx + Dx^2 + D
Then I got those 4 equations above...I am not seeing how to solve for the variables right now..maybe a brain fart.
I am getting equations that make no sense now..
Ax^3 + Ax + Bx^2 + B + Cx^5 + 2Cx^3 + Cx + Dx^4 + 2Dx^2 + D
so..
for the x^5 terms: C = 0
x^4 terms: D = 0
X^3 terms: A + 2C = 2 A = 2 since C = 0
X^2 terms: B + 2D = 0 B = 0 since D = 0
X^1 terms: A + C = 0 (impossible since A = 2)
X^0 terms: B + D = 0