Question

Helpp?
Graphs of functions !!
I need to determine if these are odd or even?

1. f(x)=x^5-x

2. f(x)=5

3.f(x)=x^4+2x^3

Answer 1

even if f(-x) = f(x)
odd if f(-x) = -f(x)

even if all powers are even
odd if all powers are odd

remember that 0 is an even power

Answer 2

So These Are all even?!
Sorry I'm still kind of lost..

Answer 3

come on. can't tell even and odd numbers?!?!?

x^5-x = x^5 - x^1
5 and 1 are both odd, so f(x) is odd

5 = 5x^0
0 is an even power, so f(x) is even

x^4 + 2x^3
4 is even, 3 is odd, so f(x) is neither even nor odd.