Problem :
Express
using the imaginary unit ı.
= 5ı.
Problem :
Is 3 a complex number?
Yes. In standard form, it is written
3 + 0ı. Every real number is a
complex number in which the imaginary part equals zero.
Problem :
Rewrite the complex number
+3ı4 in standard form z = a + bı and find a and b.
+3ı4 = 6ı +3 = 3 + 6ı.
a = 3, and
b = 6.
Problem :
What is ı618?
ı618 = (ı4)154ƒı2 = - 1.
Problem :
When the complex number z = - 2 + 3ı is plotted in the complex plane,
in which quadrant is it?
Quadrant II.