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Evaluate
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Differentiate w.r.t. k
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8k-2-3
Combine 5k and 3k to get 8k.
8k-5
Subtract 3 from -2 to get -5.
\frac{\mathrm{d}}{\mathrm{d}k}(8k-2-3)
Combine 5k and 3k to get 8k.
\frac{\mathrm{d}}{\mathrm{d}k}(8k-5)
Subtract 3 from -2 to get -5.
8k^{1-1}
The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of ax^{n} is nax^{n-1}.
8k^{0}
Subtract 1 from 1.
8\times 1
For any term t except 0, t^{0}=1.
8
For any term t, t\times 1=t and 1t=t.