Question

Даю 100 баллов, решить 1 на выбор

Answer 1

1)(1+у)dx-(x-1)dy=0
dx/(x-1)-dy/(1+y)=0
dx/(x-1)=dy/(1+y)
d(x-1)/(x-1)=d(y+1)/(y+1)
интегралd(x-1)/(x-1)=
интегралd(y+1)/(y+1)
ln(y+1)=ln(x-1)+C
(y+1)/(x-1)=C
y+1=(x-1)*C
y=x•C-(C+1)