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7.Disprove that "a> bfor all a >b" by finding a suitable counter example.

Answer»

For all negative integers a and b such that a > b its not true that a^2 > b^2

For ex:(1) for a = - 1, b = - 2a > ba^2 = 1, b^2 = 4So, a^2 < b^2

(2) for a = - 4, b = - 5a > ba^2 = 16, b^2 = 25So, a^2 < b^2



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