Differentiate w.r.t. r
-192
Evaluate
-192r
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\frac{\mathrm{d}}{\mathrm{d}r}(-192r)
Multiply 32 and -6 to get -192.
-192r^{1-1}
The derivative of ax^{n} is nax^{n-1}.
-192r^{0}
Subtract 1 from 1.
-192
For any term t except 0, t^{0}=1.
-192r
Multiply 32 and -6 to get -192.
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