QUESTION IMAGE
Question
determine whether the function $f(x)=4x^{4}-4x^{3}-x^{2}$ is even, odd or neither.
Step1: Recall the definitions
A function $f(x)$ is even if $f(-x)=f(x)$ and odd if $f(-x)=-f(x)$.
Step2: Find $f(-x)$
Substitute $-x$ into $f(x)=4x^{4}-4x^{3}-x^{2}$. We get $f(-x)=4(-x)^{4}-4(-x)^{3}-(-x)^{2}=4x^{4}+4x^{3}-x^{2}$.
Step3: Compare with $f(x)$ and $-f(x)$
Since $f(-x)=4x^{4}+4x^{3}-x^{2}
eq f(x)=4x^{4}-4x^{3}-x^{2}$ and $f(-x)=4x^{4}+4x^{3}-x^{2}
eq -f(x)=-4x^{4}+4x^{3}+x^{2}$, the function is neither even nor odd.
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