1. ## transormation of function

dy/dx = (2x +y -1) / ( 4x -2y +1) , x= X +1 , y = Y-1 ,, how to make it into differential equation ? my ans is not same as the ans given .
P/s : in the second photo , it's lnx +c , sorry for the blur photo

2. ## Re: transormation of function

Well the equation in the picture is not the one in the post. So which are you talking about?

3. ## Re: transormation of function

In your working you dropped a minus sign when integrating $3 \over 2(1-v)$.

4. ## Re: transormation of function

Originally Posted by Archie
In your working you dropped a minus sign when integrating $3 \over 2(1-v)$.
after doing the correction , my final asn become (3/4) ln ( (x+y ) / x ) - (1/4 )ln ( (x+y-2 ) / x ) = ln x + c , which is still wrong