How do you integrate int (x-5)/(x-2)^2x5(x2)2 using partial fractions?

1 Answer
Jan 24, 2017

int (x-5)/((x-2)^2) dx = ln abs (x-2) +3 /(x-2) + Cx5(x2)2dx=ln|x2|+3x2+C

Explanation:

We do not really need partial fractions here as we can separate the numerator by writing:

int (x-5)/((x-2)^2) dx = int (x-2-3)/((x-2)^2) dx = int (dx)/(x-2) -3 int (dx)/((x-2)^2) x5(x2)2dx=x23(x2)2dx=dxx23dx(x2)2

now, as d(x-2) = dxd(x2)=dx we can solve the integrals directly

int (x-5)/((x-2)^2) dx = ln abs (x-2) +3 /(x-2) + Cx5(x2)2dx=ln|x2|+3x2+C