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Which of the following pairs of expressi...

Which of the following pairs of expression are defined for the same set of values of `x` ? `f_1(x)=2(log)_2xa n df_2(x)=(log)_(10)x^2` `f_1(x)=(log)x_xx^2a n df_2(x)=2` `f_1(x)=(log)_(10)(x-2)+(log)_(10)(x-3)a n df_(2(x))=(log)_(10)(x-2)(x-3)dot`

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