Differentiate w.r.t. a
39a^{12}
Evaluate
3a^{13}
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\frac{\mathrm{d}}{\mathrm{d}a}(3a^{13})
To multiply powers of the same base, add their exponents. Add 7 and 6 to get 13.
13\times 3a^{13-1}
The derivative of ax^{n} is nax^{n-1}.
39a^{13-1}
Multiply 13 times 3.
39a^{12}
Subtract 1 from 13.
3a^{13}
To multiply powers of the same base, add their exponents. Add 7 and 6 to get 13.
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