Question #cc9f3

1 Answer
Nov 29, 2017

It's an even function.

Explanation:

A function is odd #f(-x) = -f(x)#
A function is even if #f(-x) = f(x)#

In this problem substitute #f(-x)# so,
#f(-x) = (-x)^4-3(-x)^2-4#
#= x^4 -3x^2-4#
When we substitute #-x#, we get the original function therefore, this is an even function.