Hello

There is a function(or packages) in REDUCE the a differential equation system is converted to a linear DES?

In other words a function to solve a non-linear or homogene differential equation(no odesolve)

for example how to solve the differential equation system

DF(x,u) = y + sin(u)

DF(y,_u) = z

DF(z,_u) =-y+cos(u)

Thank you