## 48 Reputation

18 years, 194 days

## simplify expressions...

Maple 10

Why the command

does not return eps???

How can I simplify expressions like this?

## continue a numerical integration of a od...

Maple

is possible to continue a numerical integration from a know point and add the solution the the know one?
i.e.
if I have:
P=dsolve(... range=0..1)
and I want continue the integration until 3 (so without reintegrate the 0..1 interval) and add that solution tothe first one.

## how to store numerical dsolve results wi...

Maple

If i use dsolve for solve numerically a ODEs with classical methods, it seems that it isn't possible use the option range=a..b, so for every plot that i want graph using odeplot, i need to integrate the equation! Is there any way to store the results as dsolve do when is used the range option with rk45 method?

## save dsolve results??...

Maple

Hi
is possible to save the dsolve results for a numerical integration? so that i can reload them with out re-run the integrator.

## dolve numerically matrix form equation...

Maple

does any one know if it is possible to solve numerically a ODE sys write in matrix form without first evaluate is as a set of equation?

for example my system is y'(x)=A(x,y).b(x,y)
where y'(x) and b(x,y) are Vectors and A(x,y) is a matrix

so i would solve it numerically without doing first the dotproduct symbolically. I woud do this because my system equation is constitudet not from a simple matrix.vector but by large matrix inversion so do it symbolically first take a lot of time and memory.

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