test conique feb 7 Flashcards

1
Q

cercle
lieu géométrique

A

ensemble de points qui sont équidistants à un point fixe appelé centre

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2
Q

parabole

lieu géométrique

A

tous les points à égale distance d’un point fixe (foyer) et d’une droite (directrice)

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3
Q

ellipse

lieu géométrique

A

point dont la somme des distances à 2 points fixes (foyers) est constante
d (P,F1) + d (P, F2) = K = 2a

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4
Q

hyperbole

lieu géométrique

A

lieu géométrique d’un point dont la valeur absolue de la différence des distances à 2 points fixes appelés foyers est constante
|d (P,F1) - d (P, F2) | = K = 2a

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5
Q

lien ellipse

A

a^2 = b^2 + c^2

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6
Q

lien hyperbole

A

c^2 = a^2 + b^2

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7
Q

parabole
distance focale

A

c

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8
Q

parabole
corde focale

A

4c

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9
Q

ellipse
grand axe

A

2a
(entre A1 et A2)

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10
Q

ellipse
petit axe

A

2b
(entre B1 et B2)

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11
Q

ellipse
distance focale

A

2c
(entre les 2 foyers)

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12
Q

ellipse verticale (formule)

A

x^2 / b^2 + y^2 / a^2 = 1

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13
Q

ellipse horizontale (formule)

A

x^2 / a^2 + y^2 / b^2 = 1
a > b

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14
Q

ellipse
corde focale

A

2b^2/a

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15
Q

parabole
générale –> canonique ?

A

complétion du carré

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16
Q

cercle
générale –> canonique ?

A

double complétion du carré

17
Q

ellipse
axe transversal

A

droite passant par les oyers

18
Q

ellipse
axe conjugué

A

droite perpendiculaire à la transversale passant par les foyers

19
Q

hyperbole horizontale
axe transverse

A

2a

20
Q

hyperbole
axe conjugué

A

2b

21
Q

hyperbole horizontale
rectangle

A

largeur = 2a
hauteur = 2b
R (a,b)

22
Q

hyperbole horizontale
asymptotes

A

y = ± bx /a
diagonales du rectangle

23
Q

hyperbole verticale
axe transverse

A

2a

24
Q

hyperbole verticale
distance focale

A

2c

25
Q

hyperbole verticale
asymptotes

A

y = ± ax/b

26
Q

hyperbole verticale
rectangle

A

largeur: 2b
hauteur: 2 a
R = (b,a)

27
Q

hyperbole horizontale
équation

A

x^2 / a^2 - y^2 / b^2 = 1

28
Q

hyperbole verticale
équation

A

y ^2 / a^2 - x^2 / b^2 = 1

29
Q

hyperbole horizontale + verticale
corde focale

A

2b^2 / a