Ujian Matematika NUU

Quiz
•
Mathematics
•
9th - 12th Grade
•
Medium

Federal Bureau
Used 2+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Bilangan kompleks yang paling tepat untuk mempresentasikan grafik di atas adalah...
Z = -6 - 5i
Z = -5 - 6i
Z = -5 + 6i
Z = 5 - 6i
Answer explanation
Pada bilangan kompleks, Re(Real) dapat dinotasikan menjadi x dan Im(imajiner) dapat dinotasikan menjadi y .
2.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Titik koordinat P(8, 1) jika di ubah ke dalam bentuk bilangan kompleks menjadi....
8 + i
8 - i
8
-8 - i
Answer explanation
Selain dalam bentuk z = a+bi bilangan kompleks dapat dinyatakan dalam pasangan terurut (x, y)
Dimana x sebagai Re(real) dan y sebagai Im(imajiner)
3.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Bilangan kompleks di atas yang mempunyai kesamaan ditunjukkan oleh bilangan kompleks nomor...
(i) dan (ii)
(ii) dan (v)
(iii) dan (iv)
(iii) dan (v)
Answer explanation
Pada nomor 3 dan 4 ketika di tukar akan menghasil nilai yang sama dimana bila z= 9-i ketika di tukar akan menghasilkan z = -i + 9 begitupun sebaliknya
4.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Hasil operasi pengurangan dari bilangan kompleks (2i - 4) - (3 - 7i) adalah...
-7 + 9i
-1 + 9i
1 - 3i
5 - 2i
Answer explanation
(2i - 4) - (3 - 7i)
2i - 4 - 3 + 7i
-4-3 + 2i+7i
-7 + 9i
5.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Bagian imajiner dari bilangan kompleks 5 + √-16 adalah...
5
√-16
-16
4
Answer explanation
Bentuk 5 + √-16 dapat dinyatakan sebagai 5 + √-16 = 5 +4i sehingga 5 sebagai bagian real dan 4 sebagai bagian imajiner
6.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Hasil dari (2 + 3i)(1 - 2i) adalah...
10 - i
8 - i
6 + i
-4 - i
Answer explanation
(2 + 3i)(1 - 2i)
2×1 + 2×(-2i) + 3i×1 + 3i×(-2i)
2 - 4i + 3i - 6i²
2+6 - 4i+3i
8-i
7.
MULTIPLE CHOICE QUESTION
2 mins • 4 pts
Tentukan z1 - z2 jika..
Z1 = 14x - 6yi
Z2 = 12x - 4yi
2x-2yi
4x-2yi
2x+2yi
4x+2yi
Answer explanation
(14x-6yi) -(12x-4yi)
14x-6yi-12x+4yi
14x-12x-6yi+4yi
2x-2yi
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