## Complex Arithmetic

Once you probably thought the real numbers were all that there were.  But when you learned that $\sqrt{-1}$ was another type of number, then everything changed.  Most of the time, elementary math courses just introduce imaginary numbers, but don't let you get your hands dirty with them.  Instead, you are supposed to wait until a complex variables course in either upper level college or graduate school.  But if you know some trigonometry, we introduce the mechanics of the situation here!  Check out these pages ...

Once functions are defined for complex numbers, it becomes possible to study the functions, not just compute values with the functions.  Here are some pages to explore the functions...