Question

How do you find the range of `f(x)=5cos(x + pi) + 3`?

Answer 1

`cos(x+pi)` has a range of `[-1,+1]`
(because `cos(`anything`)` has a range of `[-1,+1]`)

`5cos(x+pi)` has a range of `[-5,+5]`

`f(x)=5cos(x+pi)+3 has a range of`[-2,+8]#