vectori Flashcards

1
Q

Regula triunghiului

A

AB+BC=AC

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2
Q

Regula paralelogramului

A

AB + AC= AD

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3
Q

Asociativitatea vectoritlor

A

(a+b)+c = a+(b+c)

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4
Q

Comutativitatea vectorilor

A

a+b = b+a

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5
Q

Elemenetul neutru al vectorilor

A

a+0 = 0+a = a

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6
Q

Descompunerea unui vector dupa i si j

A

AB=(xb-xa)i + (yb-ya)j

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7
Q

Modulul unui vector

A

AB= sqrt (xb-xa)^2 + (yb-ya)^2

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8
Q

Coliniaritatea a doi vectori

A

a/c = b/d

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9
Q

Paralelismul a doi vectori

A

a/c = b/d

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10
Q

Perpendicularitatea a doi vectori

A

u * v = 0
sau
ac + bd=0

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