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AP EAMCET · Maths · Definite Integration

\(\int_{\frac{1}{\sqrt[5]{31}}}^{\frac{1}{\sqrt[5]{242}}} \frac{1}{\sqrt[5]{x^{30}+x^{25}}} d x=\)

  1. A \(\frac{65}{4}\)
  2. B \(\frac{-75}{4}\)
  3. C \(\frac{75}{4}\)
  4. D \(\frac{-65}{4}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{-65}{4}\)

Step-by-step Solution

Detailed explanation

\(I=\int_{\frac{1}{\sqrt[5]{31}}}^{\frac{1}{\sqrt[5]{242}}} \frac{d x}{\sqrt[5]{x^{30}+x^{25}}} \Rightarrow I=\int_{\frac{1}{\sqrt[5]{31}}}^{\frac{1}{\sqrt[5]{242}}} \frac{d x}{x^6\left(1+x^{-5}\right)^{1 / 5}}\) \(1+x^{-5}=t \Rightarrow d t=-5 x^{-6} d x\)…