Complex Numbers

The standard form for a complex number is a + bi, where i is the imaginary unit, . You do complex arithmetic (addition, subtraction, multiplication, division, and exponentiation) the same way as you do real number arithmetic. The imaginary unit, i, is located above the CATALOG key. Accordingly, press i to enter i. For example, we display (6 3i)/(4 + 5i).

To do algebra with complex numbers, such as solve equations, factor expressions, or determine zeros of a function, press to access the Algebra menu. Then select A:Complex _.

From the complex submenu, select


to solve an equation, factor an expression, or determine zeros of a function over the complex numbers.