Question

Which functions are even?

1.) f(x) = x4 – x2
2.) f(x) = x2 – 3x + 2
3.) (x) = -2)
4.) f(x) = 5x1

Answer 1

1. Even

2. Neither

3. Even

4. Odd

Equations: 1 and 3 are even

Explanation:

1. f(-x) = (-x)^4 - (-x)^2

= x^4 - x^2 Even

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

= x^2 + 3x + 2 Neither

3. f(-x) = -2

= -2 Even

4. f(-x) = 5(-x)

= -5x Odd

I hope this helps!