1. I was asked how many zeros need to exist in order for the following functions to exist.
My answer would be none, but can anyone tell me if i am right?
2. Also, for a equation such as 2Cos(x)-√3 = 0
do i only take the positive root when solving for x or do i take the positve and negative?
and how about for 2Cos(x)+√3 = 0