Evaluate
-\frac{1}{39fg}
Differentiate w.r.t. g
\frac{1}{39fg^{2}}
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\frac{\left(-f\right)\times 11}{33g\times 13f^{2}}
Divide \frac{-f}{33g} by \frac{13f^{2}}{11} by multiplying \frac{-f}{33g} by the reciprocal of \frac{13f^{2}}{11}.
\frac{-f}{3\times 13gf^{2}}
Cancel out 11 in both numerator and denominator.
\frac{-f}{39gf^{2}}
Multiply 3 and 13 to get 39.
\frac{-1}{39fg}
Cancel out f in both numerator and denominator.
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