Hi, similar problem as before :) I want to use numeric solution DE while solving another DE. Example:

sol:=dsolve(Dsys,numeric)

dsolve({diff(y(x),x)=y(x)-sol,y(0)=1},numeric)

The second part doesn´t work. Can you help me to fix it? Thank you :)

Hi,

I want to subtract two functions. One of them is numeric-type and the second is exact. Something like this:

solNum := dsolve(Dsys, numeric);

sol := dsolve(Dsys);

plot(solNum-sol)

In the last step there is an error (of course). How can I fix it?

Thank you very much

Hi,

do anybody know, how I can see how a function is programmed? I want to know more about dsolve function and what is hidden behind.

Thank you all