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TS EAMCET · Maths · Indefinite Integration

\(\int \frac{3^x}{\sqrt{9^x-1}} d x=\)

  1. A \(\frac{1}{\log 3} \log \left|3^x+\sqrt{9^x-1}\right|+c\)
  2. B \(\frac{1}{\log 3} \log \left|3^x-\sqrt{9^x-1}\right|+c\)
  3. C \(\frac{1}{\log 9} \log \left|3^x-\sqrt{9^x-1}\right|+c\)
  4. D \(\frac{1}{\log 9} \log \left|9^x-\sqrt{9^x-1}\right|+c\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{1}{\log 3} \log \left|3^x+\sqrt{9^x-1}\right|+c\)

Step-by-step Solution

Detailed explanation

We have, \(\int \frac{3^x}{\sqrt{9^x-1}} d x\) Put \(3^x=t \Rightarrow 3^x \log 3 d x=d t\)…