Diketahui a = i + 2j + 3k,
b = – 3i – 2j – k, dan c = i – 2j + 3k, maka 2a + b – c = …
REMED PTS MINAT KELAS X
Quiz
•
Mathematics
•
12th Grade - University
•
Easy
diana sari
Used 3+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui a = i + 2j + 3k,
b = – 3i – 2j – k, dan c = i – 2j + 3k, maka 2a + b – c = …
2i – 4j + 2k
–2i + 4j + 2k
2i + 4j – 2k
- 2i - 4j – 2k
a. 2i + 4j + 2k
2.
MULTIPLE CHOICE QUESTION
15 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 …
√10
√13
√15
3√2
9√2
3.
MULTIPLE CHOICE QUESTION
5 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 6
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Diketahui vektor a = 6xi + 2xj – 8k,
b = –4i + 8j + 10k dan
c = –2i + 3j – 5k. Jika vektor a tegak lurus b maka vektor a – c = …
-58i - 20j - 3k
-58i - 23j - 3k
-62i - 20j - 3k
-62i - 23j - 3k
-64i - 23j - 3k
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Diketahui vektor a = 4i + 2j + 2k dan b = 3i + 3j . Besar sudut antara vektor a dan b adalah….
30o
45o
60o
90o
120o
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Jika vektor a = –3i – j + xk dan vektor
b = 3i – 2j + 6k. Jika panjang proyeksi vektor a pada b adalah 5, maka nilai x = …
-7
-6
5
6
7
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
diketahui a = 5i + 6j + k dan b = i - 2j - 2k. proyeksi orthogonal vektor a dan b adalah . . . .
i + 2j + 2k
i + 2j - 2k
i - 2j + 2k
-i + 2j + 2k
2i + 2j -k
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