> I would do it like this:
>
>
> x = var('x') # independent variable
> b = var('b') # constant
>
> y = function('y', x) # unknown function
>
> # define 2nd order ODE; (undampened spring with unit of mass attached)
> myode = diff(y,x,2)+b*y == 0 # define 2order ODE
>
> assume(b>0) # mass is always possitive
>
> f = desolve_laplace(de = myode,dvar = y, ivar=x)
>
> I should return an expression like:
>
> cos(sqrt(b)*x)*y(0) + sin(sqrt(b)*x)*D[0](y)(0)/sqrt(b)
Thanks. It helped me.
--
Priyanka Kapoor
http://kapoorpriyanka.in
Linux User Group, Ludhiana
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