1.
Solve the following equation:
(y-x) dy/dx + 2x +3y = 0
2.
Solve the following equation
dy/dx = - (x+y) / (3x +3y - 4)
Thank you!! please help!!
for the 1st queston, I tried:
dy/dx
= -(2x+3y) / (y-x)
= (-2x-3y) / (-x+y)
=[2 + 3(y/x)] / [1 - (y/x)]
Let y/x = V, dV/dx = (2+3v) / (1-v).....
I cant found anything wrong...but it actually unsolvable if I continue to compute dV/dx
for the 2nd queston, I tried:
dy/dx
= -1 / [3 - 4/(x+y)]
let (x + y) = V, dV/dx = -1 / (3 - 4/v) = 1 / (4/v - 3)
dy/dx = V + x(dv/dx) = F(v)
V + x(dv/dx) = v / (4 - 3v)
I cant found anything wrong again...but it actually unsolvable if I continue to compute ....
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