Équations différentielles - Khan Academy
Section outline
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Differential equations relate a function to its derivative. That means the solution set is one or more functions, not a value or set of values. Lots of phenomena change based on their current value, including population sizes, the balance remaining on a loan, and the temperature of a cooling object.
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In second order linear equations, the equations include second derivatives. They are useful for modeling the movement of bridges, the transfer of heat, and even the behavior of subatomic particles. From understanding the basics to tackling complex roots and the method of undetermined coefficients, come master these versatile equations.
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The Laplace transform is a mathematical technique that changes a function of time into a function in the frequency domain. If we transform both sides of a differential equation, the resulting equation is often something we can solve with algebraic methods.