Power Rule dxdxn=nxn−1 Power Rule - Intuition dxdf=amount of change in inputamount of change in output dxdf=dxf(x+dx)−f(x) dxdf=dx(x+dx)2−x2 dxdf=dxx2+2xdx+dx2−x2 dxdf=dx2xdx+dx2 dxdf=2x+dx dxdf=2x