Brief Overview

There are 3 subtopics in this chapter:
i) Separable Variables
ii) First Order Linear Differential Equations
iii) Applications

In this chapter, you will be given a first order differential equation and you will need to solve it. Basically, you only need to choose between separate the variable or by using integrating factors. As long as you cannot separate the variable, it will be the case of using integrating factor. Choose wisely! Sometimes you might need to factorise or expand the function first before you can separate the function.

Then, you will attempt to solve problems involving first order differential equations. You are not expected to formulate the differential equations. But, you are expected to solve any applications problems including Newton's Law of Cooling, electric circuit, population growth and radioactive decay.