How do you determine if #f(x)= x^4 - 4x^2# is an even or odd function?

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Answer 1 · 2018-03-21T16:25:13

#f(x)" is even"#

a function is odd if

#f(-x)=-f(x)#

a function is even if

#f(-x)=f(x)#

#f(x)=x^4-4x^2#

#f(-x)=(-x)^4-4(-x)^2#

#f(-x)=x^4-4x^2=f(x)#

#:. f(x)" is even"#