Complex numbers and complex planes

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Introduction
Lessons
Examples
Lessons
  1. For the following quadratic equations,
    i) find and classify the roots
    ii) plot the roots on the complex plane
    1. y=x21 y=x^2-1
    2. y=x2+1 y=x^2+1
    3. y=x2+2x5 y=-x^2+2x-5
  2. Given that function f(x)=2x22x+3 f(x)=2x^2-2x+3 , find the roots of the function
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    Topic Notes
    Now that we know the basics of imaginary numbers, let's expand our knowledge and learn about another concept that is closely tied to imaginary numbers – complex numbers, a number that is consisted of a real part, and an imaginary part. In this section, we will learn what makes up a complex number, as well as how to plot on a complex plane.