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Home : Math Topics : Arithmetic/Early : Number Sense/About Numbers : Imaginary/Complex

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  Selected Sites   (see also All Sites in this category)

  1. Dave's short course on Complex Numbers - David Joyce; Clark University
    An introduction to complex numbers, including a little history (quadratic and cubic equations; Fundamental Theorem of Algebra, the number i) and the mathematics (the complex plane, addition, subtraction; absolute value; multiplication; angles and polar coordinates; reciprocals, conjugation, and division; powers and roots), and intended for a general audience having a familiarity with ordinary real numbers (all positive and negative numbers and zero) and algebra. more>>

  2. Imaginary Numbers - Math Forum, Ask Dr. Math FAQ
    What is an imaginary number? What is i? more>>

  3. John and Betty's Journey into Complex Numbers - Matt Bower
    A children's book-on-the-Web from Australia, designed to introduce complex numbers in story form in a way that is intuitive and enjoyable for students. John, Betty, and their dog Trevor solve a series of problems designed to introduce integers, fractions, surds, imaginary numbers, complex numbers, Argand diagram; vectors, multiplication in polar form, relating polar and Cartesian form, De Moivre's theorem; and the Mandelbrot set.