
Διανύσματα
Quiz
•
Mathematics
•
12th Grade
•
Practice Problem
•
Medium
Αικατερίνη Μυτακίδου
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12 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Δίνεται ισοσκελές και ορθογώνιο τρίγωνο ΑΒΓ με ΑΒ = ΑΓ και γωνία Α = 90 . Η γωνία μεταξύ των διανυσμάτων ΑΒ,ΓB είναι (σε μοίρες):
45
90
135
180
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Στο διπλανό σχήμα είναι:
x=α−β+γ
x=α+β+γ
x=−α+β−γ
κανένα από τα υπόλοιπα
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Αν ισχύει α=−α τότε
α=(0,0)
Δεν ορίζεται το διάνυσμα α
α=(1,-1)
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4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Για τυχαία σημεία Α, Β, Γ, Δ ισχύει
BΓ+AB+ΓΔ=
ΔΑ
ΑΔ
0
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5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Δύο αντίθετα διανύσματα έχουν ίσα μέτρα
Σωστό
Λάθος
6.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
β=(3,−1) α=(2,1) τότε ∣α−2β∣ ( μόνο το αποτέλεσμα)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Για τα διανύσματα
α=(1,2) και β=(−2,1) ισχύει:
α⊥β
α//β
α⋅β=(−2,2)
κανένα από τα παραπάνω
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