Differentiate w.r.t. J
628J
Evaluate
314J^{2}
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2\times 314J^{2-1}
The derivative of ax^{n} is nax^{n-1}.
628J^{2-1}
Multiply 2 times 314.
628J^{1}
Subtract 1 from 2.
628J
For any term t, t^{1}=t.
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