Parabole Flashcards

1
Q

Parabolė

A

Kvad funkcijos grafine israiska, kyria apibudina bendroji formule:
y=ax²+bx+c

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2
Q

Ka lemia kvadeatineje funkcijoje a raide paranolej

A

a raide lemia paraboles atidarymo krypti ir platuma

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3
Q

Jei a<0 tai paraboles sakos eina i vorsu ar i apacia

A

I virsu

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4
Q

Jei a>0 tai paraboles sakos eina i vorsu ar i apacia

A

Apacia

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5
Q

Kuo didesne a reiksme tuo parabole

A

Siauresne

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6
Q

Kuo a reiksme mazesne tuo parabola

A

Platesne

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7
Q

Ka lemia kvadratines funkcijos b raide parabolej

A

Lemia paraboles simetrija ir nuokrypi nuo y asies

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8
Q

Ka zymi kvad finkcijos c raide parabolej

A

Taska kur parabole kerta y asi

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9
Q

Standartine paraboles funkcija / forma, kokia jos virsune ir kaip eina sakos

A

y=x²
Virsune (0;0)
Sakos eina I virsu

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10
Q

Kkia yra paranoles virsune *nesvarbu kokios

A

v(Xv; Yv)

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11
Q

Kaip suzinoti paraboles virsune x (formule)

A

Xv= - b/2a

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12
Q

Kaip suzinoti paraboles virsunes y (formule arba budas)

A

Isistatyti apskaiciuota Xv reiksme i formule arba naudoti:
Yv=-v²+4ac/4a

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13
Q

Kokia yra paraboles simetrijos asis

A

X=Xv

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