15 years of math: the grand finale Flashcards

1
Q

protsent

A

osa=terve*osamäär

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2
Q

osa tervikust (p% arvust a)

A

a*p%/100%

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3
Q

tervik osa järgi (p% on b)

A

b*100%/p%

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4
Q

suhe %-des (a moodustab b-st)

A

a/b*100%

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5
Q

a2-b2

A

(a-b)(a+b)

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6
Q

(a-b)(a+b)

A

a2-b2

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7
Q

(a+-b)2

A

a2+-2ab+b2

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8
Q

a2+-2ab+b2

A

(a+-b)2

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9
Q

am*an

A

am+n

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10
Q

am:an

A

am-n

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11
Q

(a*b)n

A

an*bn

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12
Q

(a:b)n

A

an:bn

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13
Q

(am)n

A

am*n

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14
Q

a-n

A

1/an

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15
Q

sina

A

a/c

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16
Q

cosa

A

b/c

17
Q

tana

A

a/b

18
Q

ab->

A

(x2-x1;y2-y1)

19
Q

tõusu ja algordinaadiga määratud sirge

A

y=kx+b

20
Q

punkti ja tõusuga määratud sirge

A

y-y1=k(x-x1)

21
Q

kahe punktiga määratud sirge

A

x-x1/x2-x1=y-y1/y2-y1

22
Q

aritmeetilise jada arv

A

an=a1+(n-1)d

23
Q

aritmeetilise jada summa

A

Sn=2a1+(n-1)d/2n

24
Q

geomeetrilise jada arv

A

an=a1*qn-1