Problemddx(1+tanx)\frac{d}{dx}(1 + \tan x)dxd(1+tanx)Step-by-step solution加法法則：ddx(1)+ddx(tanx)=0+sec2x\frac{d}{dx}(1) + \frac{d}{dx}(\tan x) = 0 + \sec^2 xdxd(1)+dxd(tanx)=0+sec2x。結果：sec2x\sec^2 xsec2x。Answersec2(x)\sec^2(x)sec2(x)Want to solve a different problem? Open the derivative solver →Related worked examples/solve/calculus/derivative-of-tan-x