Numers And Algebra Flashcards

1
Q

N

A

Whole numbers

Positive

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2
Q

Z

A

Integers

Also negative numbers

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3
Q

Q

A

Rationals
Recurring Decimals
Fractions

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4
Q

R

A

Reals
Pi
Square roots
Non ending decimals

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5
Q

Number sets

A

N
Q
Z
R

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6
Q

Sequence

A

Successive terms that differ from each other by a fix number d (the common difference)

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7
Q

Series

A

A series is obtained by adding all the terms of the sequence

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8
Q

Formula nth term

A

Un=U1+(n-1)d

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9
Q

Sum of formulae

A

Sn=n/2(U1+(n-1)d

Sn=n/2(U1+Un)

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