P2-xp-q=0 solve by charpit method
y'''' + 3y''' + 3y' + y = x*e^(-x) + x*cosx - 7 + x^(2) *e^(-x) *sinx
separate the differential equation into variables
2x2yy,=1+x2
Reduce the homogeneous equation to the separated one
(x+y)dx+(y-x)dy=0
solve the equation in exact differentials
(y2-1)dx+(2xy+3y)dy=0
Solve the equation in exact differentials:
(y-3x2)dx+(x-4y)dy=0
Solve the equation in exact differentials:
(x2+y)dx+(x-2y)dy=0
Solve the first order linear inhomogeneous differential equation using the Bernoulli method:
y,+(3y/x)=(1/x3)
Solve the first order linear inhomogeneous differential equation using the constant variation method:
y,-(2y/x)=-(3/x2)
Verify that the given differential equation is an exact:
(y2-1)dx+(2xy+3y)dy=0