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AP EAMCET · Maths · Definite Integration

\(\lim _{n \rightarrow \infty}\left[\frac{n}{(n+1) \sqrt{2 n+1}}+\frac{n}{(n+2) \sqrt{2(2 n+2)}}\right.\) \(+\frac{n}{(n+3) \sqrt{3(2 n+3)}}+\ldots n\) terms \(]=\int_0^1 f(x) d x\) then \(f(x)=\)

  1. A \(\frac{1}{(1+x) \sqrt{x^2+2 x}}\)
  2. B \(\frac{1}{(1+x) \sqrt{x+2}}\)
  3. C \(\frac{1}{(1+x) \sqrt{x^2+x+1}}\)
  4. D \(\frac{1}{(1+x) \sqrt{x^2-2 x}}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{1}{(1+x) \sqrt{x^2+2 x}}\)

Step-by-step Solution

Detailed explanation

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