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TS EAMCET · Maths · Definite Integration

limn1nlog(2n)!nn·n!=12fxdx, then fx=

  1. A log(1+x)
  2. B log1x
  3. C logx
  4. D logx+1x
Verified Solution

Answer & Solution

Correct Answer

(C) logx

Step-by-step Solution

Detailed explanation

Let l=limn→∞1nlog2n!nnn! Note: Assume base of logarithm as e l=limn→∞1nlogn+1n+2.....n+nnn ⇒l=limx→∞1n∑r=1nlogn+rn ⇒l=limx→∞1n∑r=1nlog1+rn ⇒l=∫01log1+xdx put x+1=t ⇒dx=dt…