Differentiate w.r.t. x
-\frac{63}{2x^{8}}
Evaluate
\frac{9}{2x^{7}}
Graph
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-7\times \frac{9}{2}x^{-7-1}
The derivative of ax^{n} is nax^{n-1}.
-\frac{63}{2}x^{-7-1}
Multiply -7 times \frac{9}{2}.
-\frac{63}{2}x^{-8}
Subtract 1 from -7.
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