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AP EAMCET · Maths · Definite Integration

\(\lim _{n \rightarrow \infty} n^4\left[\frac{1}{n^5}+\frac{1}{\left(n^2+1\right)^{\frac{5}{2}}}+\frac{1}{\left(n^2+4\right)^{\frac{5}{2}}}+\frac{1}{\left(n^2+9\right)^{\frac{5}{2}}}+\ldots+\right]=\)

  1. A \(\frac{3}{4 \sqrt{2}}\)
  2. B \(\frac{3 \sqrt{2}}{4}\)
  3. C \(\frac{5}{6 \sqrt{2}}\)
  4. D \(\frac{5 \sqrt{2}}{6}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\frac{5}{6 \sqrt{2}}\)

Step-by-step Solution

Detailed explanation

Since, \(\lim _{n \rightarrow \infty} n^4\left[\frac{1}{n^5}+\frac{1}{\left(n^2+1\right)^{\frac{5}{2}}}+\frac{1}{\left(n^2+4\right)^{\frac{5}{2}}}+\ldots .+\frac{1}{\left(n^2+n^2\right)^{\frac{5}{2}}}\right]\)…