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(3*ln(14/x))'The calculation above is a derivative of the function f (x)
(3)'*ln(14/x)+3*(ln(14/x))'
0*ln(14/x)+3*(ln(14/x))'
0*ln(14/x)+3*(1/(14/x))*(14/x)'
0*ln(14/x)+3*(1/(14/x))*(((14)'*x-(14*(x)'))/(x^2))
0*ln(14/x)+3*(1/(14/x))*((0*x-(14*(x)'))/(x^2))
0*ln(14/x)+3*(1/(14/x))*((0*x-(14*1))/(x^2))
0*ln(14/x)+3*(-x^-1)
3*(-x)^-1
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