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Geometric Mean

If f(x+y, x-y...

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If f(x+y, x-y)=xy then the arithmetic mean of f(x, y) and f(y, x) is (1) x (2) y (3) 0 (4) (x^2-y^2)

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f (x + y, x - y) = x y

, then the arithmetic mean of

f (x, y)

f (y, x)

Q. If f(x+2y, x-2y)=xy, then f(x, y) equals

f (x + 2 y, x - 2 y) = x y,

f (x, y)

If f(x+2y, x-2y)=xy, then f(x, y) equals

f (x + y) = f (x) + f (y) - x y

x, y \in R

{lim}_{h \to 0} \frac{f (h)}{h} = 3

, then the area bounded by the curves

y = f (x)

y = x^{2}

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