Choose a topic

Article of the week… Quadratic Equation

A quadratic equation is any equation in the form

ax2 + bx + c = 0,      where a, b, c ∈ ℝ and a≠0.

The important part is the ax2. Every quadratic equation has to have this term and a ≠ 0. Because if a = 0 then we can simplify the equation to bx + c = 0 and that’s actually a linear equation. The a, b and c are real numbers and they are usually called quadratic coefficient, linear coefficient and constant, respectively.

…and you can read the rest on the dedicated page.

Other sources

If you haven’t found answers to your questions on this web, you can try other sources. When writing this web I usually draw knowledge from these websites or books:

  • Khan Academy – there are infinite amount of high quality videos about mathematics. It’s kind of funny to hear the story how the Khan Academy has been founded, see Khan’s presentation on TEDx.
  • Precalculus: With Unit Circle Trigonometry – this is a fantastic book. David Cohen knows his topic and can explain it well. And there are colorful pictures too! What more would you possible want from a math textbook?
  • Calculus from Michael Spivak. As far as I know this is one of the most famous book about calculus ever written. If not the most famous.
  • Wikipedia – I know, everyone knows Wikipedie so surprise here. Nevertheless is you want to know something about mathematics, it’s unlikely that you don’t find the answer on Wikipedia.

Site map

Just choose an article and read it!