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For these functions, determine which ones are EVEN. (y axis symmetry) a) f(x)=3x^4 +...
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Functions a, d, and e are even because they contain only even powers of x (or no x at all, as in e).
By definition, even function obeys the condition
f(-x) = f(x).
For any even power n of x
`(-x)^n = x^n`
So the functions that contain only even powers of x are even.
Posted by ishpiro on June 14, 2013 at 11:50 PM (Answer #1)
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