At , the function…

MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation

Problem

x=3\pi/4

, the function

f(x)=\tan x

is: (a)

\text{Derivative not defined}

(b)

\text{Decreasing}

(c)

\text{Increasing}

(d)

\text{Stationary (slope zero)}