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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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Answer» 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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