Differentiate w.r.t. x
1.6
Evaluate
\frac{8x}{5}-2.1
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\frac{\mathrm{d}}{\mathrm{d}x}(1.6x-2.1)
Subtract 0.5 from -1.6 to get -2.1.
1.6x^{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}.
1.6x^{0}
Subtract 1 from 1.
1.6\times 1
For any term t except 0, t^{0}=1.
1.6
For any term t, t\times 1=t and 1t=t.
1.6x-2.1
Subtract 0.5 from -1.6 to get -2.1.
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