Posts by JDM Educational Staff

Square roots are used in math from arithmetic to algebra to calculus and beyond.  They are also used in various professions, from carpentry to engineering.  However, this still leave some...

Variance is used in probability and statistics to help us find the standard deviation of a data set.  Knowing how to calculate variance is helpful, but it still leaves some questions about this...

You will spend a lot of time in algebra classes trying to find the solutions of quadratic equations.  However, knowing how to find these solutions is not the same as knowing what they...

Polynomials come up a lot in algebra, but it is still a good idea to know the definition.  That way, you know what a polynomial can contain and what it cannot. So, what cannot be a...

We know how to find the square root of a real number, but what about the square root of a complex number or an imaginary number? As it turns out, we can do it, but there is a little more to...

Expected value is a useful tool for analysis in business and in game theory.  However, it is often presented in the context of dice rolling, where probabilities are uniform and calculations are...