Differentiate w.r.t. a
-\frac{9}{5a^{\frac{8}{5}}}
Evaluate
\frac{3}{a^{\frac{3}{5}}}
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-\frac{3}{5}\times 3a^{-\frac{3}{5}-1}
The derivative of ax^{n} is nax^{n-1}.
-\frac{9}{5}a^{-\frac{3}{5}-1}
Multiply -\frac{3}{5} times 3.
-\frac{9}{5}a^{-\frac{8}{5}}
Subtract 1 from -\frac{3}{5}.
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