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me (120)

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Olaaa!! Perrrfect answer. 18  [33 rates]

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Q-2

above funcion(F) is decreacing in -infinty to 1/2

hence F(x)>F(0) for x less than 0

hence if F has to be <0 for any -ve x then F(0) has to be < 0

we get a-3<0

or a<3
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