Differentiate w.r.t. J
\frac{157J}{25}
Evaluate
\frac{157J^{2}}{50}
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2\times 3.14J^{2-1}
The derivative of ax^{n} is nax^{n-1}.
6.28J^{2-1}
Multiply 2 times 3.14.
6.28J^{1}
Subtract 1 from 2.
6.28J
For any term t, t^{1}=t.
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