मान लीजिए I(x) = int frac{dx}{(x-11)^{frac{11 | vedclass

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(B) दिया गया है $I(x) = \int \frac{dx}{(x-11)^{\frac{11}{13}}(x+15)^{\frac{15}{13}}}$.समाकल्य को इस प्रकार लिखें: $I(x) = \int \left( \frac{x-11}{x+15

Vedclass · Accepted Answer

$39$

Vedclass · Answer

(B) दिया गया है $I(x) = \int \frac{dx}{(x-11)^{\frac{11}{13}}(x+15)^{\frac{15}{13}}}$.समाकल्य को इस प्रकार लिखें: $I(x) = \int \left( \frac{x-11}{x+15} \right)^{-\frac{11}{13}} \cdot \frac{1}{(x+15)^2} dx$.माना $t = \frac{x-11}{x+15}$. तब $dt = \frac{(x+15) - (x-11)}{(x+15)^2} dx = \frac{26}{(x+15)^2} dx$.अतः,$I(x) = \frac{1}{26} \int t^{-\frac{11}{13}} dt = \frac{1}{26} \cdot \frac{t^{\frac{2}{13}}}{\frac{2}{13}} + C = \frac{1}{4} \left( \frac{x-11}{x+15} \right)^{\frac{2}{13}} + C$.अब,$I(37) - I(24) = \frac{1}{4} \left( \frac{37-11}{37+15} \right)^{\frac{2}{13}} - \frac{1}{4} \left( \frac{24-11}{24+15} \right)^{\frac{2}{13}}$.$= \frac{1}{4} \left( \frac{26}{52} \right)^{\frac{2}{13}} - \frac{1}{4} \left( \frac{13}{39} \right)^{\frac{2}{13}} = \frac{1}{4} \left( \frac{1}{2} \right)^{\frac{2}{13}} - \frac{1}{4} \left( \frac{1}{3} \right)^{\frac{2}{13}}$.$= \frac{1}{4} \left( \frac{1}{4^{\frac{1}{13}}} - \frac{1}{9^{\frac{1}{13}}} \right)$.दिए गए रूप से तुलना करने पर,$b = 4$ और $c = 9$.इसलिए,$3(b+c) = 3(4+9) = 3(13) = 39$.

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