What is the integral ∫x−2dx\int x^{-2} dx∫x−2dx?
ln∣x2∣\ln|x^2|ln∣x2∣
−1/x+C-1/x + C−1/x+C
x−1+Cx^{-1} + Cx−1+C
1/x+C1/x + C1/x+C