What is the derivative of f(x)=tanxxf(x) = \frac{\tan x}{x}f(x)=xtanx?
xsec2x−tanxx2\frac{x\sec^2 x - \tan x}{x^2}x2xsec2x−tanx
sec2x1\frac{\sec^2 x}{1}1sec2x
xtanx−sec2xx2\frac{x\tan x - \sec^2 x}{x^2}x2xtanx−sec2x
None