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What is the modulus of the complex number 3+4i?
4
5
6
What is the principal argument of the complex number-1+i?
π/2
-π/4
π/4
What is the modulus of the complex number 2-3i?
5\sqrt{5}5
12\sqrt{12}12
13\sqrt{13}13
What is the principal argument of the complex number 1+i?
What is the principal argument of the complex number (r, θ) = (17, π/9)?
8
17
9
What is the modulus of the complex number 0+i?
1
What is the principal argument of the complex number 4i?
-π/2
What is the principal argument of the complex number (r, θ) = (7,- π/4)?
What is the principal argument of the complex number (r, θ) = (64, π/19) ?
84
64
49
If a complex number z has a modulus of 0, what can you conclude about z?
z is undefined
z is purely real
z is zero
It is done.