Differentiate w.r.t. b
\frac{7\sqrt[6]{b}}{6}
Evaluate
b^{\frac{7}{6}}
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\frac{7}{6}b^{\frac{7}{6}-1}
The derivative of ax^{n} is nax^{n-1}.
\frac{7}{6}\sqrt[6]{b}
Subtract 1 from \frac{7}{6}.
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