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Evaluate
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Differentiate w.r.t. x
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\frac{-x^{2}+2x^{2}}{2}
Since \frac{-x^{2}}{2} and \frac{2x^{2}}{2} have the same denominator, add them by adding their numerators.
\frac{x^{2}}{2}
Combine like terms in -x^{2}+2x^{2}.
\frac{\mathrm{d}}{\mathrm{d}x}(\frac{-x^{2}+2x^{2}}{2})
Since \frac{-x^{2}}{2} and \frac{2x^{2}}{2} have the same denominator, add them by adding their numerators.
\frac{\mathrm{d}}{\mathrm{d}x}(\frac{x^{2}}{2})
Combine like terms in -x^{2}+2x^{2}.
2\times \frac{1}{2}x^{2-1}
The derivative of ax^{n} is nax^{n-1}.
x^{2-1}
Multiply 2 times \frac{1}{2}.
x^{1}
Subtract 1 from 2.
x
For any term t, t^{1}=t.