વિધેયનું સંકલન કરો: $x \log x$

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ધારો કે $I = \int x \log x \, dx$.
ખંડશઃ સંકલનના સૂત્રનો ઉપયોગ કરતા: $\int u \cdot v \, dx = u \int v \, dx - \int \left( \frac{du}{dx} \int v \, dx \right) dx$.
$LIATE$ ના નિયમ મુજબ $u = \log x$ (પ્રથમ વિધેય) અને $v = x$ (બીજું વિધેય) લેતા:
$I = \log x \int x \, dx - \int \left( \frac{d}{dx} \log x \cdot \int x \, dx \right) dx$
$I = \log x \cdot \frac{x^2}{2} - \int \left( \frac{1}{x} \cdot \frac{x^2}{2} \right) dx$
$I = \frac{x^2 \log x}{2} - \int \frac{x}{2} \, dx$
$I = \frac{x^2 \log x}{2} - \frac{1}{2} \cdot \frac{x^2}{2} + C$
$I = \frac{x^2 \log x}{2} - \frac{x^2}{4} + C$,જ્યાં $C$ એ સંકલનનો અચળાંક છે.

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