Where can I find info to the following questions:
1. Who invented Differential Equations?
2. When was it invented?
3. Why was it invented?
4. What are the practical uses of Differential Equations?
5. How is it applied to in economics, engineering, physics
This is for a class presentation, and I would like to start off by answering these questions. So far I've only found Wikipedia but Im finding difficulty in finding info from reputable sources.
Any assistance will be greatly appreciated. Thanks