Differentiate w.r.t. k
-4k
Evaluate
-2k^{2}
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\frac{\mathrm{d}}{\mathrm{d}k}(-2k^{2})
Combine k^{2} and -3k^{2} to get -2k^{2}.
2\left(-2\right)k^{2-1}
The derivative of ax^{n} is nax^{n-1}.
-4k^{2-1}
Multiply 2 times -2.
-4k^{1}
Subtract 1 from 2.
-4k
For any term t, t^{1}=t.
-2k^{2}
Combine k^{2} and -3k^{2} to get -2k^{2}.
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