Differentiate w.r.t. x
-\frac{114}{x^{7}}
Evaluate
\frac{19}{x^{6}}
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-6\times 19x^{-6-1}
The derivative of ax^{n} is nax^{n-1}.
-114x^{-6-1}
Multiply -6 times 19.
-114x^{-7}
Subtract 1 from -6.
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