Let f (x) be any function defined on (- A, a). It is proved that G (x) = f (x) + F (- x) is an even function, H (x) = f (x) - f (- x) is an odd function, and X belongs to (- A, a) Please; ah

Let f (x) be any function defined on (- A, a). It is proved that G (x) = f (x) + F (- x) is an even function, H (x) = f (x) - f (- x) is an odd function, and X belongs to (- A, a) Please; ah

It is proved that x belongs to (- A, a) because g (- x) = f (- x) + F (x) = g (x), so g (x) is an even function
H (- x) = f (- x) - f (x) = - H (x), so h (x) is an odd function
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