Question
find all relative extrema using the first derivative test. f(x)=-4x+tanx on (-π/2,π/2)
Answers
oobleck
f' = sec^2x - 4
f'=0 when
sec^2x = 4
secx = ±2
x = -π/3, π/3
f'=0 when
sec^2x = 4
secx = ±2
x = -π/3, π/3