Exercise2 : Solve the ODE i)
(dy)/(dx)+(xy)/(1+x^(2))=x\sqrt(y)
. ii)
(dy)/(dx)+(y)/(x)=(y^(2))/(x^(2))
. Exercise 3 : Find the values of parameters for which the ODE
(ax^(2)y+y^(3))dx+((1)/(3)x^(3)+bxy^(2))dy=0
is exact, and then solve it in the case of those values of
a
and
b
. Exercise 4 : Show that the DE
(x^(2)+y^(2)+x)dx+ydy=0
is not exact but becomes exact when multiplied by the integrating factor
\mu (x,y)=(1)/(x^(2)+y^(2))
. Then solve the equation.