VG2 Flashcards

(34 cards)

1
Q

AB (vetor)

A

B-A = (xb-xa, yb-ya)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

a • v

A

(ax, ay)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

|v|

A

sqrt(x^2+y^2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

mesma direção

A

v = k • u

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

u • v

A

|u|•|v|• cos x

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ortocentro

A

encontro das alturas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

baricentro

A

encontro das medianas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

fórmula baricentro

A

G = (A+B+C)/3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

incentro

A

encontro das bissetrizes, círculo dentro

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

fórmula incentro

A

I = (Aa + Bb + Cc)/(a+b+c)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

circuncentro

A

encontro das mediatrizes; círculo fora

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

condição para alinhamento de 3 pontos

A

|x1 y1 1|
|x2 y2 1| = 0
|x3 y3 1|

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

determinante matriz 3x3

A

escolhe uma linha ou coluna e número por número dela vc exclui sua linha e coluna e faz det da matriz 2x2 some o primeiro subtraia o segundo e some o último

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

equacao da reta

A

ax + by + c = 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

retas paralelas

A

a1/a2 = b1/b1 ≠ c1/c2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

retas concorrentes

A

a1/a1 ≠ b1/b2

17
Q

retas coincidentes

A

a1/a2 = b1/b2 = c1/c2

18
Q

feixe de retas paralelas

19
Q

coeficiente angular

A

m = tga = dX/dY = a/b

20
Q

coeficiente anular de retas paralelas

21
Q

coeficiente angular retas perpendiculares

A

multiplica = -1

22
Q

ângulo entre 2 retas

A

tga = |(ms-mr)/(1+ms•mr)|

23
Q

distância entre origem e reta

A

|c/sqrt(a^2+b^2)|

24
Q

distância entre ponto e reta

A

|ax + by + c/sqrt(a^2+b^2)|

25
distância entre retas paralelas
|c-c’/sqrt(a^2+b^2)|
26
equação da circunferência
(x-xc)^2 + (y-yc)^2 = R^2
27
soma das raizes
-b/a
28
produto das raizes
(-1)^n • c/a
29
cos 3a =
4 cos^3 - 3 cos a
30
tg 2a
2 tga/ (1-tg^2 a)
31
sen a + sen b
2 sen (a+b/2) cos (a-b/2)
32
2 cos a cos b
cos (a-b) + cos (a+b)
33
c^2 =
a^2 + b^2 - 2ab cos C
34
lei dos senos
a/senA = b/senB = c/senC = 2R (círculo fora)