3.4 Complex Numbers
A complex number is an expression of the form a + bi where a
and b are real numbers and i 2 = -1. The real part of the complex
number is 'a', and the imaginary part is 'b'.
Two complex numbers are equal if and only if their real parts are
equal and their imaginary parts are equal.
Ex. Identify the real part and the imaginary part of each of the following
complex numbers:
Ex. 2 Express the following in a + bi form:
1
Ex. 3 Simplify:
Ex. 4 Solve for x :
2