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(-6/(x^6))'The calculation above is a derivative of the function f (x)
((-6)'*x^6-(-6*(x^6)'))/((x^6)^2)
(0*x^6-(-6*(x^6)'))/((x^6)^2)
(0*x^6-(-6*6*x^(6-1)))/((x^6)^2)
(0*x^6-(-6*6*x^5))/((x^6)^2)
36*x^-7
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