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TS EAMCET · Maths · Indefinite Integration

\[ \int \frac{2 x+3}{\sqrt{3 x^2-2 x+1}} d x= \]

  1. A \(\frac{2}{3} \sqrt{3 \mathrm{x}^2-2 \mathrm{x}+1}+\frac{11}{3} \sin h^{-1}\left(\frac{3 \mathrm{x}-1}{\sqrt{2}}\right)+c\)
  2. B \(\frac{1}{3} \sqrt{3 x^2-2 x+1}+\frac{11}{3} \sin h^{-1}\left(\frac{\sqrt{3} \mathrm{x}-1}{\sqrt{2}}\right)+c\)
  3. C \(\frac{1}{3} \sqrt{3 \mathrm{x}^2-2 \mathrm{x}+1}+\frac{11}{3} \sin h^{-1}\left(\frac{3 \mathrm{x}-1}{\sqrt{3}}\right)+c\)
  4. D \(\frac{2}{3} \sqrt{3 \mathrm{x}^2-2 \mathrm{x}+1}+\frac{11}{3 \sqrt{3}} \sin h^{-1}\left(\frac{3 \mathrm{x}-1}{\sqrt{3}}\right)+c\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{2}{3} \sqrt{3 \mathrm{x}^2-2 \mathrm{x}+1}+\frac{11}{3 \sqrt{3}} \sin h^{-1}\left(\frac{3 \mathrm{x}-1}{\sqrt{3}}\right)+c\)

Step-by-step Solution

Detailed explanation

\begin{aligned} & \text {} \int \frac{2 x+3}{\sqrt{3 x^2-2 x+1}} d x=\frac{1}{3} \int \frac{6 x-2+\frac{11}{3}}{\sqrt{3 x^2-2 x+1}} d x \\ & =\frac{1}{3}\left[\int \frac{(6 x-2) d x}{\sqrt{3 x^2-2 x+1}}+\frac{11}{3} \int \frac{d x}{\sqrt{3 x^2-2 x+1}}\right] \\ & I_1=\int…