Practice problem
What are the critical points for the function f(x)=ln(cosx)f(x)=\ln(\cos x)f(x)=ln(cosx) on the interval π2<x<3π2\frac{\pi}2<x<\frac{3\pi}22π<x<23π
x=0x=0x=0
x=3π4x=\frac{3\pi}{4}x=43π
x=πx=\pix=π
x=2πx=2\pix=2π
There are none.\text{There are none.}There are none.
Type a concept, like “slope” or “photosynthesis”.
