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TS EAMCET · Maths · Indefinite Integration

\(\int \frac{d x}{\sqrt{(x-1)(x-2)}}=\)

  1. A \(\sin ^{-1}(2 x+5)+c\)
  2. B \(\sinh ^{-1}(2 x-5)+c\)
  3. C \(\cosh ^{-1}(2 x-3)+c\)
  4. D \(\sin ^{-1}(3-2 x)+c\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\cosh ^{-1}(2 x-3)+c\)

Step-by-step Solution

Detailed explanation

Let \[ \begin{aligned} I & =\int \frac{d x}{\sqrt{(x-1)(x-2)}}=\int \frac{d x}{\sqrt{x^2-3 x+2}} \\ & =\int \frac{d x}{\sqrt{x^2-2 \cdot \frac{3}{2} \cdot x+\left(\frac{3}{2}\right)^2-\left(\frac{3}{2}\right)^2+2}} \end{aligned} \]…
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