Calculate the indefinite integral ∫x−2dx\int x^{-2} dx∫x−2dx for x≠0x \neq 0x=0.
−1x+C-\frac{1}{x} + C−x1+C
−2x−3+C-2x^{-3} + C−2x−3+C
1x+C\frac{1}{x} + Cx1+C
−x−1+C-x^{-1} + C−x−1+C