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AP EAMCET · Maths · Differential Equations

The general solution of the differential equation \(\frac{d y}{d x}=\frac{2 x y-4 x+y-2}{2 x y+x-4 y-2}\) is

  1. A \(5(y-x)+2 \log \left(\frac{y-2}{x-2}\right)=c\)
  2. B \(2(y-x)-5 \log \left(\frac{y-2}{x-2}\right)=c\)
  3. C \(2(y-x)+5 \log \left(\frac{y-2}{x-2}\right)=c\)
  4. D \(5(y-x)-2 \log \left(\frac{y-2}{x-2}\right)=c\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(2(y-x)+5 \log \left(\frac{y-2}{x-2}\right)=c\)

Step-by-step Solution

Detailed explanation

\(\frac{d y}{d x}=\frac{(2x+1)(y-2)}{(x-2)(2y+1)}\) \(\int \frac{2y+1}{y-2} dy = \int \frac{2x+1}{x-2} dx\) \(\int \left(2 + \frac{5}{y-2}\right) dy = \int \left(2 + \frac{5}{x-2}\right) dx\) \(2y + 5 \log|y-2| = 2x + 5 \log|x-2| + c'\)…