2 Answers | Add Yours
Functions a, d, and e are even because they contain only even powers of x (or no x at all, as in e).
By definition, even function obeys the condition
f(-x) = f(x).
For any even power n of x
`(-x)^n = x^n`
So the functions that contain only even powers of x are even.
A, D, E
We’ve answered 320,003 questions. We can answer yours, too.Ask a question