How do you find local maximum value of f using the first and second derivative tests: #f(x)= sinx#?
1 Answer
The max occurs at
Explanation:
#cos x=0# at#x= pi/2, (3pi)/2, "etc."#
Make a sign chart for
At the critical point where
#-sin(pi/2) = -1 <0#
Since the second derivative is negative at