Notation Flashcards

1
Q

A

Integer

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2
Q

A

Natural number

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3
Q

A

Rational number

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4
Q

A

Element of

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5
Q

A

Not an element of

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6
Q

A

Subset

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7
Q

A

Union

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8
Q

A

Real number

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9
Q

I

A

Irrational

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10
Q

(a,b)

A

{x: a<x<b}

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11
Q

[a,b]

A

{x: a≤x≤b}

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12
Q

(a+b)2

A

= a2+2ab+b2

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13
Q

a3+b3

A

= (a+b)(a2-2ab+b2)

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13
Q

Pascals triangle

A

(0) 1
(1) 1 1
(2) 1 2 1
(3) 1 3 3 2
(4) 1 4 6 4 1
(5) 1 5 10 10 5 1

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