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Evaluate
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Differentiate w.r.t. v
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-2v^{10}\times 7
To multiply powers of the same base, add their exponents. Add 9 and 1 to get 10.
-14v^{10}
Multiply -2 and 7 to get -14.
\frac{\mathrm{d}}{\mathrm{d}v}(-2v^{10}\times 7)
To multiply powers of the same base, add their exponents. Add 9 and 1 to get 10.
\frac{\mathrm{d}}{\mathrm{d}v}(-14v^{10})
Multiply -2 and 7 to get -14.
10\left(-14\right)v^{10-1}
The derivative of ax^{n} is nax^{n-1}.
-140v^{10-1}
Multiply 10 times -14.
-140v^{9}
Subtract 1 from 10.