Differentiate w.r.t. x
80
Evaluate
80x
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\frac{\mathrm{d}}{\mathrm{d}x}(80x)
Combine 78x and 2x to get 80x.
80x^{1-1}
The derivative of ax^{n} is nax^{n-1}.
80x^{0}
Subtract 1 from 1.
80\times 1
For any term t except 0, t^{0}=1.
80
For any term t, t\times 1=t and 1t=t.
80x
Combine 78x and 2x to get 80x.
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