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NCERT Class XII Mathematics Chapter - - Solutions

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Find the following integrals in Exercises 6 to 20.
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Question : 11 of 271
Marks: +1, -0
∫x3+5x2−4x2 dx\int \frac{x^3+5x^2-4}{x^2} \, dx
Solution:  
Let I=∫x3+5x2−4x2 dxI=\int \frac{x^3+5x^2-4}{x^2} \, dx =∫(x+5−4x−2)dx=\int (x+5-4x^{-2})dx
=x22+5x−4x−1−1+C=\frac{x^2}{2}+5x-\frac{4x^{-1}}{-1}+C =x22+5x+4x+C=\frac{x^2}{2}+5x+\frac{4}{x}+C
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