Geometria Analítica I Flashcards

1
Q

Formula distancia entre pontos

A

Dab = Raiz de (Xb-Xa)’ + (Yb-Ya)’

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2
Q

form. distancia de ponto a reta

A

d = |ax0 + by0 + c|/ √(a2 + b2)

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3
Q

Baricentro do Triangulo (trigonometria)

A

Xa+Xb+Xc ; Ya+Yb+Yc
————- ————-
3 3

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4
Q

equação da reta

A

ax + bx + c = 0

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5
Q

equação reduzida da reta

A

y=mx + n

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6
Q

tgx (equação da reta)

A

yb-ya/xb-xa = m

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7
Q

Equação da reta desenvolvida

A

(ya-yb)x + (xb-xa)y + (xayb-xbya) = 0

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8
Q

condição de retas concorrentes

A

a1/a2 diferente de b1\b2

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9
Q

retas paralelas

A

a1/a2 = b1/b2 diferente de c1/c2

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10
Q

retas coincidentes

A

a1/a2 = b1/b2 = c1/c2

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11
Q

condição de Retas concorrentes 2

A

m1 ≠ m2

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12
Q

condicao de restas paralelas 2

A

m1 = m2 e n1≠n2

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13
Q

condicao de retaz coincidentes 2

A

m1=m2 e n1≠n2

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14
Q

formula da distancia entre retas paralelas

A

|cs-cr| / |raiz de a’ +b’|

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15
Q

Area do Triangulo(geometria analítica)

A

A = 1/2. do determinante

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16
Q

como descobrir reta segmentaria

A

divide a equação por c