Differentiate w.r.t. x
40x
Evaluate
20x^{2}
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\frac{\mathrm{d}}{\mathrm{d}x}(20x^{2})
Combine 4x^{2} and 16x^{2} to get 20x^{2}.
2\times 20x^{2-1}
The derivative of ax^{n} is nax^{n-1}.
40x^{2-1}
Multiply 2 times 20.
40x^{1}
Subtract 1 from 2.
40x
For any term t, t^{1}=t.
20x^{2}
Combine 4x^{2} and 16x^{2} to get 20x^{2}.
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