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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 : 15 of 271
Marks: +1, -0
∫x(3x2+2x+3)dx\int \sqrt{x} (3x^2+2x+3) dx
Solution:  
Let I=∫x(3x2+2x+3)dxI=\int \sqrt{x} (3x^2+2x+3) dx =∫(3x5/2+2x3/2+3x1/2)dx=\int (3x^{5/2}+2x^{3/2}+3x^{1/2}) dx
=3x7/272+2x5/252+3x3/232+C=\frac{3x^{7/2}}{\frac{7}{2}}+\frac{2x^{5/2}}{\frac{5}{2}}+\frac{3x^{3/2}}{\frac{3}{2}}+C
=67x7/2+45x5/2+2x3/2+C=\frac{6}{7}x^{7/2}+\frac{4}{5}x^{5/2}+2x^{3/2}+C
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