Differentiate w.r.t. m
1125m^{2}
Evaluate
375m^{3}
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3\times 375m^{3-1}
The derivative of ax^{n} is nax^{n-1}.
1125m^{3-1}
Multiply 3 times 375.
1125m^{2}
Subtract 1 from 3.
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