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National
Easy
Complex Numbers
10–12
What is the modulus of the complex number
z
=
3
+
4
i
z = 3 + 4i
z
=
3
+
4
i
?
Qual é o módulo do número complexo
z
=
3
+
4
i
z = 3 + 4i
z
=
3
+
4
i
?
Answer options
A.
5
B.
25
C.
7
D.
7
\sqrt{7}
7
Check Answer
Solution
Step 1 of 3
1.
The modulus is
∣
z
∣
=
a
2
+
b
2
|z| = \sqrt{a^2 + b^2}
∣
z
∣
=
a
2
+
b
2
Next step
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