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Question

Mathematics Question on integral

The anti derivative of (x+1x)\bigg(\sqrt x+\frac{1}{\sqrt x}\bigg) equals

A

13x13+2x12+C\frac{1}{3}x^{\frac{1}{3}}+2x^{\frac{1}{2}}+C

B

23x23+12x12+C\frac{2}{3}x^{\frac{2}{3}}+\frac{1}{2}x^{\frac{1}{2}}+C

C

23x32+2x12+C\frac{2}{3}x^{\frac{3}{2}}+2x^{\frac{1}{2}}+C

D

23x32+12x12+C\frac{2}{3}x^{\frac{3}{2}}+\frac{1}{2}x^{\frac{1}{2}}+C

Answer

23x32+2x12+C\frac{2}{3}x^{\frac{3}{2}}+2x^{\frac{1}{2}}+C

Explanation

Solution

(x+1x)\bigg(\sqrt x+\frac{1}{\sqrt x}\bigg)

= x12dx+x12dx\int x^{\frac{1}{2}}dx+\int x^{\frac{1}{2}}dx

= x3232+x1212+C\frac{x^{\frac{3}{2}}}{\frac{3}{2}}+\frac{x^{\frac{1}{2}}}{\frac{1}{2}}+C

=23x32+2x12+C\frac{2}{3}x^{\frac{3}{2}}+2x^{\frac{1}{2}}+C

Hence, the correct Answer is C.