Questions: Determine if the following function is even, odd, or neither.
f(x)=5 x^4+3 x^2
(a) f(-x)=
(b) Thus f(x) is Select an answer and is symmetric to the Select an answer
Transcript text: Determine if the following function is even, odd, or neither.
\[
f(x)=5 x^{4}+3 x^{2}
\]
(a) $f(-x)=$ $\square$
(b) Thus $f(x)$ is Select an answer $\vee$ and is symmetric to the Select an answer $\checkmark$
Solution
Solution Steps
To determine if a function is even, odd, or neither, we need to evaluate f(−x) and compare it to f(x) and −f(x). A function is even if f(−x)=f(x), odd if f(−x)=−f(x), and neither if it satisfies neither condition.
Step 1: Evaluate f(−x)
Given the function f(x)=5x4+3x2, we substitute −x for x to find f(−x):
f(−x)=5(−x)4+3(−x)2=5x4+3x2
Step 2: Compare f(−x) with f(x) and −f(x)
From the evaluation, we have:
f(−x)=5x4+3x2=f(x)
Since f(−x)=f(x), the function is even.