Maybe it would be easier for us to help you if we had some details about where your problems lie. Giving an example often helps in explanations. Your request was rather vague.
I'm sorry for my english, I'm Italian.. I'm very sad because tomorrow there's my last exam.. I need help on Euler's method for differential equations.
I know that is absolutly stable, but in my exercises I've to find an optimal h to make the method absolutly stable.
Can you help me plz??
Fabiana from Italy