Differentiate w.r.t. m
-\frac{1}{2} = -0.5
Evaluate
-\frac{m}{2}
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\frac{\mathrm{d}}{\mathrm{d}m}(-\frac{1}{2}m)
Combine \frac{m}{2} and -m to get -\frac{1}{2}m.
-\frac{1}{2}m^{1-1}
The derivative of ax^{n} is nax^{n-1}.
-\frac{1}{2}m^{0}
Subtract 1 from 1.
-\frac{1}{2}
For any term t except 0, t^{0}=1.
-\frac{1}{2}m
Combine \frac{m}{2} and -m to get -\frac{1}{2}m.
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