1. What are the parts of a complex number? a. Real (x) b. Imaginary (y) Re (x) and Im (y) C. d. None For a complex number z = x + iy, if x = 0, z = iy purely imaginary. a. True b. False 2. 3. What is the complex conjugate of 3 + 4i? a. 3 b. 4i C. 3-4i d. 13+4i| 4. Multiplying a complex number by its complex conjugate gives a real number. a. True b. False 5. What is the distance of the complex point (z) on the argand plane from the origin? a. Imaginary part b. c. d. Real part Argument of z Modulus of z

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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1. What are the parts of a complex number?
Real (x)
a.
b. Imaginary (y)
C.
d. None
Re (x) and Im (y)
2. For a complex number z = x + iy, if x = 0,
iy purely imaginary.
a. True
b. False
3. What is the complex conjugate of 3 + 4i?
a. 3
b.
4i
C.
3 - 4i
d. 13 + 4i|
4. Multiplying a complex number by its
complex conjugate gives a real number.
a. True
b. False
5. What is the distance of the complex point
(z) on the argand plane from the origin?
a. Imaginary part
b.
Real part
Argument of z
Modulus of z
c.
d.
Transcribed Image Text:1. What are the parts of a complex number? Real (x) a. b. Imaginary (y) C. d. None Re (x) and Im (y) 2. For a complex number z = x + iy, if x = 0, iy purely imaginary. a. True b. False 3. What is the complex conjugate of 3 + 4i? a. 3 b. 4i C. 3 - 4i d. 13 + 4i| 4. Multiplying a complex number by its complex conjugate gives a real number. a. True b. False 5. What is the distance of the complex point (z) on the argand plane from the origin? a. Imaginary part b. Real part Argument of z Modulus of z c. d.
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