How do you evaluate the derivative of the function #f (x) = tan x cot x# at the indicated point (1,1)?
2 Answers
Apr 1, 2015
I would use the Product Rule to evaluate the derivative knowing that:
derivative of
Derivative of
(you can find these remembering that
So you get:
Evaluated at
As an exercise on derivation is good, but you can see from the start that your function can be rearranged as:
graph{tan(x)cot(x) [-10, 10, -5, 5]}
Apr 1, 2015
Therefore: