Precalculus

Show that sum of two even function with the same domain is an even function.

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  1. f(x) = f(-x)
    g(x) = g(-x)

    h(x) = f(x) + g(x)
    h(-x) = f(-x)+g(-x) = f(x)+g(x)
    so
    h(-x)=h(x)

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  2. Thanks!!

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