MATEMATIKA VEKTOR
Quiz
•
Mathematics
•
1st - 10th Grade
•
Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui titik A(5, 1, 3), B(2, –1, –1), dan C(4, 2, –4). Besar sudut ABC =
180
90
60
30
0
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui segitiga ABC dengan A(2, 1, 2), B(6, 1, 2), dan C(6, 5, 2). Jika u mewakili AB dan v mewakili AC , maka sudut yang dibentuk oleh vector u dan v adalah
30
45
60
90
120
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Diketahui vector a = 4i 2j + 2k dan vector b = 2i – 6j + 4k. Proyeksi vector orthogonal vector a pada vector b adalah
i - j + k
i - 3j + 2k
i - 4j + 4k
2i - j + k
6i - 8j + 6k
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jika vektor a = xi - 4j + 8k tegak lurus vektor b = 2xi + 2xj - 3k, maka nilai x yang memenuhi adalah
-2 atau 6
-3 atau 4
-4 atau 3
-6 atau 2
-2 atau - 3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui segitiga ABC dengan koordinat A(2, 3, 4), B(5, 0, 1), dan C(4, 2, 5). Titik P membagi AB sehingga AP : AB = 2 : 3. Panjang vektor PC adalah
Akar 10
akar 15
Akar 20
3 akar 2
9 akar 2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui p = 6i + 7j - 6k dan
q = xi + j + 4k. Jika panjang proyeksi q pada p adalah 2, maka x adalah
5/6
3/2
13/2
43/6
53/6
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui a + b = i - j + 4k dan
| a - b | = akar 14. Hasil dari a · b =
5
4
3
2
1
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