Question

I -3i I=?

Answer 1

Hint: |a+bi| = sqrt(a^2+b^2)

Answer 2

In your case, a = 0 and b = -3 since -3i is the same as 0-3i

Answer 3

Draw this complex number out on the complex plane. How long is the line segment from the 'origin' (0+0i) to -3i ?

Answer 4

3i

Answer 5

length is always a real number

Answer 6

The absolute value of any complex number is always a real number.

Answer 7

3

Answer 8

good, you got it