Question

How do you determine if `f(x) = sec x` is an even or odd function?

Answer 1

`f(x)=secx` is an even function

Explanation:

A function `f(x)` is even if `f(-x)=f(x)`

and `f(x)` is odd if `f(-x)=-f(x)`

Here we have `f(x)=secx` and

`f-(x)=sec(-x)=secx=f(x)`

Hence `f(x)=secx` is an even function