Question

Use a graphing utility to graph the function
f(x) = cos 2x − 2 sin x
a) Approximate the maximum points for the
graph on [0, 2π).
b) Approximate the minimum points on the
graph in the interval [0, 2π).

Answer 1

Have you been able to graph it using a utility? e.g. http://www.wolframalpha.com/input/?i=cos+2x+%E2%88%92+2+sin+x