Step-by-step explanation:
Use double and triple angle identities:
sin(2x) + cos(3x)
2 sin x cos x + 4 cos³x − 3 cos x
I’m not sure if this is correct but
you have used 3/8 of the plants so you will have 5/8 left to use
A vertex can be the max or min. The vertex is the highest point or lowest point of a function.