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(ln(3*x+4/x))'The calculation above is a derivative of the function f (x)
(1/(3*x+4/x))*(3*x+4/x)'
(1/(3*x+4/x))*((3*x)'+(4/x)')
(1/(3*x+4/x))*(3*(x)'+(4/x)'+(3)'*x)
(1/(3*x+4/x))*(3*(x)'+(4/x)'+0*x)
(1/(3*x+4/x))*((4/x)'+0*x+3*1)
(1/(3*x+4/x))*(((4)'*x-(4*(x)'))/(x^2)+3)
(1/(3*x+4/x))*((0*x-(4*(x)'))/(x^2)+3)
(1/(3*x+4/x))*((0*x-(4*1))/(x^2)+3)
(3-(4/(x^2)))/(3*x+4/x)
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