Differentiate w.r.t. a
32a^{7}
Evaluate
4a^{8}
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\frac{\mathrm{d}}{\mathrm{d}a}(4a^{8})
Combine 2a^{8} and 2a^{8} to get 4a^{8}.
8\times 4a^{8-1}
The derivative of ax^{n} is nax^{n-1}.
32a^{8-1}
Multiply 8 times 4.
32a^{7}
Subtract 1 from 8.
4a^{8}
Combine 2a^{8} and 2a^{8} to get 4a^{8}.
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