Quand je vois... je pense... Flashcards

1
Q

x + y = 1 ou x + y + z = 1 where x, y, z positive integers

A

Moyenne ponderee. La somme des poids vaut toujours 1.

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2
Q

x2 = |x|

A

x = 1, -1 ou 0

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3
Q

21k is a multiple of 180

A

21k / 180 est un entier

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4
Q

b is halfway between a and c

A

traduire algrebiquement: b = (a+c) / 2

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5
Q

T is an integrer divisible by integer a

A

T = {a, 2a, 3a, … }

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6
Q

Least value / smallest value x can take

A

Penser a x negatif

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7
Q

Quelle valeur ne pas oublier

dans cubes dans decomposition facteurs premiers?

A

1, qui est cube de 1.

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8
Q

x2 - x < 0

A

x2 < x, donc 0 < x < 1

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9
Q

ab > 0

A

a et b sont de meme signe, donc tous les deux positifs ou tous les deux negatifs

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10
Q

ab <0

a < b

A

a et b sont de signes oppose, donc un est positif et l’autre négatif. En plus a < b, alors je sais que a < 0 < b

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11
Q

Unit digit: remainder in division by 5 is 1

A

unit digit is 1 or 6

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12
Q
A
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