What is the largest interval on which the function is concave down for #f(x) = 5sin(x) + (sin(x))^2# over the interval #[-pi/3, 2pi/3]#?
2 Answers
Explanation:
f(x) is periodic with period
The half of a full wave, in
The tangent crosses the wave at
I think you would say OK to my answer now..
If you need exact values, I got
Which is about
Explanation:
Solving
The only value of
For
(Use
For
(Use
So the largest interval is the closed interval
Which is about