Problem 109 of 7
Determine whether f(x)=x^2+3 is even. Explain.
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test y-axis symmetry or f(-x)=f(x).
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Representation must be an equation or symmetric table suitable for even-function test.
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Solution
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1. Compare f(-x) to f(x), or compare outputs at opposite inputs.
2. Even functions have matching outputs for x and -x.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Checking only positive inputs.