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Evaluate
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Differentiate w.r.t. x
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\frac{1}{x^{2}x}
Multiply \frac{1}{x^{2}} times \frac{1}{x} by multiplying numerator times numerator and denominator times denominator.
\frac{1}{x^{3}}
To multiply powers of the same base, add their exponents. Add 2 and 1 to get 3.
\frac{\mathrm{d}}{\mathrm{d}x}(\frac{1}{1}x^{-1-2})
To divide powers of the same base, subtract the denominator's exponent from the numerator's exponent.
\frac{\mathrm{d}}{\mathrm{d}x}(x^{-3})
Do the arithmetic.
-3x^{-3-1}
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}.
-3x^{-4}
Do the arithmetic.