1.

A_FUNCTION_F(X)_IS_EVEN,_WHEN??$

A. f(x) = -f(x)
B. f(x) = f(-x)
C. f(x) = -f(x)f(-x)
D. f(x) = f(x)f(-x)
Answer» C. f(x) = -f(x)f(-x)


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