Differentiate w.r.t. f
-\frac{3}{4} = -0.75
Evaluate
-\frac{3f}{4}
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-\frac{3}{4}f^{1-1}
The derivative of ax^{n} is nax^{n-1}.
-\frac{3}{4}f^{0}
Subtract 1 from 1.
-\frac{3}{4}
For any term t except 0, t^{0}=1.
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