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Maths Studies > Summary > Flashcards

Summary Flashcards

1
Q

The common difference

A

Arithmetic sequence

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2
Q

A n B

A
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3
Q

In Exponentials

A

C is not the y intercept, it is the asymptote

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4
Q

If a decimal has a pattern

A

It will be rational

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5
Q

Opposite faces

A

Have the same surface area

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6
Q

K =

A

Y coordinate

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7
Q

Asymptotes

A

Move up or down with what is added / subtracted, it never touches the graph. The denominator must be 0, it can’t be +0x

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8
Q

Degrees of freedom

A

(Row - 1)(Columns - 1)

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9
Q

Geometric sequence

A

Multiplication

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10
Q

For mean estimates in grouped frequency

A

Use the midpoint

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11
Q

The first significant figure

A

Must not be 0

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12
Q

To calculate the common ratio

A

One term / its previous term

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13
Q

(0, x)

A

Always y intercept when x = 0

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14
Q

Independent events

A

P A n B = P(A) x P(B)

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15
Q

Polynomial solver is for

A

Simultaneous equations

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16
Q

If two lines have the same gradient

A

They are parallel

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17
Q

No right angle, Matching pair

A

= Sin rule

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18
Q

If correlation is 1 or -1

A

It is “perfect” positive/negative correlation

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19
Q

Cumulative frequency

A

Always starts at 0

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20
Q

A’

A
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21
Q

V with line

A

Or but not both

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22
Q

H =

A

X coordinate

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23
Q

And =

A

X

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24
Q

I =

A

R x c x n

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25
Q

Or =

A

+

26
Q

Right angle

A

SOH CAH TOA or Pythag

27
Q

Given probability in normal distribution

A

Use inverse

28
Q

Closer to 1

A

Stronger correlation

29
Q

Y - ax^n, m = ax^n-1

A

To find any gradient on a function

30
Q

Calculator assumes

A

Normal distribution is on the left, take the number from one

31
Q

If two lines are perpendicular

A

The gradient is the negative reciprocal

32
Q

A’ n B’ = (A U B)’

A
33
Q

Expected value

A

Column total x row total / overall total

34
Q

μ ≠ 2σ =

A

95.4%

35
Q

Arithmetic sequence

A

Difference

36
Q

To find negative reciprocal

A

Flip the numerator and denominator, change the sign

37
Q

A U B’

A
38
Q

A’ U B

A
39
Q

Pythagoras

A

A^2 + b^2 = c^2

40
Q

μ ≠ σ =

A

68.3%

41
Q

Profit =

A

Revenue - cost

42
Q

If percentage is given in normal distribution

A

Type as a decimal for inverse

43
Q

No right angle, Sandwich

A

= Cos rule

44
Q

The common ratio

A

Geometric sequence

45
Q

3 rules of finding the derivative

A
  1. Ax^n – n x ax^n-1 2. Ax – a 3. A – disappear
46
Q

A line of best fit

A

Must go through the mean

47
Q

Tangent is horizontal

A

= 0

48
Q

A’ n B

A
49
Q

A n B’

A
50
Q

Min/Max

A

Vertex, turning point

51
Q

To find the common difference

A

Subtract from the number following Eg: subtract U2 from U3

52
Q

End values for

A

Cumulative frequency graphs

53
Q

Find the exponential

A

To find the asymptote

54
Q

General form

A

Ax^2 + B + C

55
Q

A’ U B’ = (A n B)’

A
56
Q

μ ≠ 3σ =

A

99.7%

57
Q

Not given probability in normal distribution

A

Normal

58
Q

Empty and complete sets

A

Are always subsets

59
Q

False fronting on implication

A

Makes whole statement true

60
Q

Vertex form

A

y = A (x - h)^2 + k

Maths Studies (3 decks)

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