Differentiate w.r.t. b
-\frac{22}{7} = -3\frac{1}{7} = -3.142857142857143
Evaluate
-\frac{22b}{7}
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\frac{\mathrm{d}}{\mathrm{d}b}(-\frac{22}{7}b)
Multiply -1 and \frac{22}{7} to get -\frac{22}{7}.
-\frac{22}{7}b^{1-1}
The derivative of ax^{n} is nax^{n-1}.
-\frac{22}{7}b^{0}
Subtract 1 from 1.
-\frac{22}{7}
For any term t except 0, t^{0}=1.
-\frac{22}{7}b
Multiply -1 and \frac{22}{7} to get -\frac{22}{7}.
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