Differential equations | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-10-02

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Differential_equation


00:01:06 1 History
00:04:11 2 Example
00:05:23 3 Types
00:06:00 3.1 Ordinary differential equations
00:07:11 3.2 Partial differential equations
00:08:15 3.3 Non-linear differential equations
00:09:38 3.4 Equation order
00:10:15 3.5 Examples
00:14:40 4 Existence of solutions
00:19:25 5 Related concepts
00:20:28 6 Connection to difference equations
00:21:04 7 Applications



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SUMMARY
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A differential equation is a mathematical equation that relates some function with its derivatives. In applications, the functions usually represent physical quantities, the derivatives represent their rates of change, and the differential equation defines a relationship between the two. Because such relations are extremely common, differential equations play a prominent role in many disciplines including engineering, physics, economics, and biology.
In pure mathematics, differential equations are studied from several different perspectives, mostly concerned with their solutions—the set of functions that satisfy the equation. Only the simplest differential equations are solvable by explicit formulas; however, some properties of solutions of a given differential equation may be determined without finding their exact form.
If a closed-form expression for the solution is not available, the solution may be numerically approximated using computers. The theory of dynamical systems puts emphasis on qualitative analysis of systems described by differential equations, while many numerical methods have been developed to determine solutions with a given degree of accuracy.