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[" 3.If "f(x)=|log(10)x|," then at "x=1]...

[" 3.If "f(x)=|log_(10)x|," then at "x=1],[" (a) "f(x)" is continuous and "f'(1^(dagger))=log_(10)e],[" (b) "f(x)" is continuous and "f'(1^(+))=log_(10)e],[" (c) "f(x)" is continuous and "f'(1)=log_(10)e],[" (d) "f(x)" is continuous and "f'(1)=-log_(10)e]

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