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((8*ln(x))/x)'The calculation above is a derivative of the function f (x)
((8*ln(x))'*x-(8*ln(x)*(x)'))/(x^2)
(((8)'*ln(x)+8*(ln(x))')*x-(8*ln(x)*(x)'))/(x^2)
((0*ln(x)+8*(ln(x))')*x-(8*ln(x)*(x)'))/(x^2)
((0*ln(x)+8*(1/x))*x-(8*ln(x)*(x)'))/(x^2)
((8/x)*x-(8*ln(x)*(x)'))/(x^2)
((8/x)*x-(8*ln(x)*1))/(x^2)
(8-(8*ln(x)))/(x^2)
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