
NOMBRES COMPLEXOS
Authored by Sonia Dominguez
Mathematics
12th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Calcula el mòdul i l'argument dels següents nombres complexos:
a) 4 + 3i b) 1 + 2i c) –i d) 2i e) 2 – i
f) –2 + i g) –5 –6i h) 5 – 2i i) –4 – 5i j) 4i k) 3 + 2i l) –5
a) 5 i 36, 87º b) 2,24 i 63,43º
c) 1 i 270º d) 2 i 90º
e) 2,24 i -26,57º f) 2,24 i 153,43º
g) 7,81 i 230,19º h) 5,39 i -21,80º
i) 6,40 i 231,34º j) 4 i 90º
k) 3,61 i 33,69º l) 5 i 180º
a) 6 i 36, 87º b) 4 i 63,43º
c) 11 i 270º d) 27 i 90º
e) 24 i -26,57º f) 2 i -153,43º
g) 81 i -230,19º h) 39 i -21,80º
i) 40 i 231,34º j) 48 i 90º
k) 61 i 33,69º l) 65 i 180º
a) 5 i 6, 87º b) 2,24 i 43º
c) 1 i 70º d) 2 i 10º
e) 2,24 i 6,57º f) 2,24 i 53,43º
g) 7,81 i 30,19º h) 5,39 i 180º
i) 6,40 i 231º j) 4 i 290º
k) 3,61 i 39º l) 5 i 18º
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Efectua cada una de les operacions indicades:
a) (3 + 2i) + (−7 − i) b)(5 + 3i)+(2i−1)+(7−5i)
c) (8 − 6i) − (2i − 7) d) (4 + i)− (2 + 6i) + (3 − 5i)
a) -1 + 4i
b) 10 - 2i
c) 15
d) 25 - 12i
a) - 4 + i
b) 11
c) 15 - 8i
d) 5 - 10i
a) i
b) 17
c) 4 - 10i
d) 15 - 13i
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Efectua els següents productes:
a) (7 + i) · (2 - 3i) b) (6 + 8i) · (6 - 5i)
c) (6 + 8i) · (2 - 3i) d) (5 + i) · (3 - 6i)
e) (2 - i) · (3 + i) · (2 + i) f) (1 - i) · (1 + 4i) · i
a) 17 - 19i
b) 76 + 18i
c) 36 - 2i
d) 21 - 27i
e) 15 + 5i
f) - 3 + 5i
a) 19 - 19i
b) 6 + 8i
c) 3 - i
d) 2 - 7i
e) 5 + 2i
f) 3 + i
a) 7 - 9i
b) 7 + i
c) 6 - 2i
d) 1 - 7i
e) 1 + 25i
f) - 5 + 3i
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
a) - i
b) 2i
c) - 1
d) - 5 - i
e) 2 - 2i
a) 1
b) 2i - 5
c) 2 + i
d) 2 - 4i
e) 4 - 2i
a) 1 - i
b) 2i - 1
c) - 1 + 2i
d) - 1 - 2i
e) 3 - i
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Detemina x perquè el producte (3 + 2i) · (6 +xi) sigui:
a) Un nombre real.
b) Un nombre imaginari pur.
a) - 2
b) 10
a) - 4
b) 9
a) - 5
b) - 4
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
x = 2
x = -2
x = 1
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
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