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Evaluate: ∫ ( 1 + Log X ) 2 X D X - Mathematics

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प्रश्न

Evaluate:\[\int\frac{\left( 1 + \log x \right)^2}{x} \text{   dx }\]

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उत्तर

\[\text{ Let } \int\frac{\left( 1 + \log x \right)^2}{x} \text{ dx }\]
\[\text{ Putting  1} + \log x = t\]
\[ \Rightarrow \frac{1}{x} dx = dt\]
\[ \therefore I = \int t^2 \cdot dt\]
\[ = \frac{t^3}{3} + C\]
\[ = \frac{\left( 1 + \log x \right)^3}{3} + C \left[ \because t = \left( 1 + \log x \right) \right]\]

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अध्याय 19: Indefinite Integrals - Very Short Answers [पृष्ठ १९८]

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आरडी शर्मा Mathematics [English] Class 12
अध्याय 19 Indefinite Integrals
Very Short Answers | Q 43 | पृष्ठ १९८

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