This ordinary differential equations video explains first-order linear differential equations, how to use the integrating factor method, and how to put a linear equation in normal form. In general, an integrating factor is a function that we multiply a differential equation by to make it integrable. In the case of first order linear equations, the integrating factor makes one side of our differential equation into a product rule. We work a couple of basic, introductory examples, emphasizing first putting the linear equations in their normal form, finding the integrating factor, and solving the differential equation.
0:00 What is a linear 1st-order equation?
1:51 Solving using an integrating factor
4:48 Worked Example 1
8:33 Worked Example 2
11:25 General outline for solving
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