General desolve and conditions questions

[Han]

I would use the form: desolve( equations, timevar, var ) and even go as far as making the functions explicit (to avoid any ambiguity arising from using shorthand notation). So rather than just x, I recommend x(t) -- it will accept just x, though, provided you write diff(x,t) and not diff(x).

desolve( x(t) + diff(x(t),t) = 5 AND x(0) = 3, t, x)

Han