Extra

Question 1

What is plus minus sd

Answer 1

Point of inflection

Question 2

theta to the what or more ignore

Answer 2

3

Question 3

When is reaction perpendicular

Answer 3

When it is smooth

Question 4

Relationship between friction and mew

Answer 4

Fr<=uN

Question 5

What is work done

Answer 5

Ke plus gpe gained

Question 6

Moving in fector i + j can b

Answer 6

2i + 2j

Question 7

What else can affect ball

Answer 7

Wind

Question 8

Integrarte between what for mechanic

Answer 8

Where it came to rest

Question 9

What does it not being modelled as a particle mean

Answer 9

Air resistance

Question 10

Can take moments about something if it is not a pivot

Answer 10

yes

Question 11

Tnesion always acts

Answer 11

Both ways from eeach side

Question 12

Do you divide or times by integrating factor

Answer 12

Times

Question 13

Why cant start be stationary point for newton raphson

Answer 13

Tangnent will never reach x axis and cant divide by 0

Question 14

Curve then line or line then curve

Answer 14

Curve then line

Question 15

mod x less than 1, what is best aprox

Answer 15

Closest to 0

Question 16

Easiest way to translat e

Answer 16

Plug values in

Question 17

How to prove something is a mutiple of three

Answer 17

+1 and -1

Question 18

What does perpend from centre to cord do

Answer 18

Bisects the chord

Question 19

How do you prove spmethin is parralel

Answer 19

Scalar multiple of one another

Question 20

What should area under curve add up to for contunuous

Answer 20

1

Question 21

Conditionms for normal

Answer 21

Has to be contunious

Question 22

Mean mode median normal

Answer 22

Same

Question 23

Conditions for normal aprox of binomial

Answer 23

Large n p close to 0.5

Question 24

Normal and tie

Answer 24

Cannpt ahve negative time

Question 25

What do you plot for cumalitiev freq

Answer 25

Top

Question 26

Extrap

Answer 26

Estimate out range

Question 27

Interpolation

Answer 27

Estimate inside range

Question 27

What is explanatory variable

Answer 27

The one that causes the change

Question 28

What does a singular matrix have

Answer 28

A determinant 0

Question 29

(3+2i)(3-2i)

Answer 29

z^2-6z+13

Question 30

What does tanhx differentiate to

Answer 30

sech squared x

Question 31

What does coth x differentiate to

Answer 31

-cosech squared

Question 32

Divergent

Answer 32

Tends to infinity

Question 33

Odd powers integration

Answer 33

Identity

Question 34

Even powers integration

Answer 34

Double angle

Question 35

Homogeous

Answer 35

=0

Question 36

Non homgeuosu

Answer 36

Not = 0

Question 37

simple v forced

Answer 37

Simple = 0

Question 38

Heavy damping

Answer 38

dIScriminant greater than 0

Question 39

critical damping

Answer 39

Disrcminant = 0

Question 40

Lght famping (oscillates )

Answer 40

Discrminant less than 0

Question 41

clt better when

Answer 41

N is large

Question 42

Assumptions ob binary

Answer 42

Prob constant, num trials fixed and independent

Question 43

What is type 1 error

Answer 43

Actual significance level and is false pos

Question 44

What is type 2 error words

Answer 44

Incorrectly accept h0 which is false ne g

Question 45

type 2

Answer 45

P( NOT CRITICAL REGION) GIVEN H1 IS TRUE

Question 46

CLOSE OR 5

Answer 46

IF IT SAYS AS CLOS TO 5 percetn as possible it can be just above not if it doesnt

Question 47

Reducing sig level type 1

Answer 47

Increase tyype 2

Question 48

Increase n to

Answer 48

Reduce type 2

Question 49

size

Answer 49

type 1

Question 50

Power

Answer 50

1- type 2

Question 51

If somethign is normal to the plane does it lie on it

Answer 51

Yes

Question 52

Inside surface of bowl

Answer 52

May not be smooth

Question 53

Unit vector

Answer 53

Divide by modulis

Question 54

Formula for r

Answer 54

0.5n(n+1)

Question 55

how to show something is not perpen to plane

Answer 55

Is not scalar multiple of normal

Question 56

Shortest distance between two parralel lines

Answer 56

Find AB in terms of t dot to direction vector of ome of them and set equal to 0

Question 57

Shortest distance between two non parralel lines

Answer 57

Find AB and this will be normal to both lines

Question 58

reflection of line in plane

Answer 58

Find intersection x1 reflect point in plane by using normal vector and doubling lamda you now have two poinyd

Question 59

arg(z+4-3i) = 3n/4

Answer 59

y-3/x+4=tan3n/4

Question 60

Conditions for poisson

Answer 60

Occur singly, ondependtly and at a constant rate

Question 61

E(X) pgf

Answer 61

g"(1) single dash

Question 62

var(x) pgf

Answer 62

g""(x) + g"(x) - (g"(x))2

Question 63

g(1)=

Answer 63

1

Question 64

y=3x+2

Answer 64

plug in t cubed and times by t squared

Question 65

can rearrange var formula

Answer 65

yes

Question 66

x1 + x2 pgf

Answer 66

Times them

Question 67

gn(0)=

Answer 67

n!p(x=n)

Question 68

What is Z

Answer 68

Integers

Question 69

What is N

Answer 69

Natural numbers

Question 70

What is Q

Answer 70

Rational numbers

Question 71

What is R

Answer 71

Real numbers

Question 72

Reasons to use histogram

Answer 72

The data is continuous and the class widths are unequal.

Question 73

One advantage and disadvantage of using box plots

Answer 73

Easy to compare distributions but you dont know exact values

Question 74

Real distinct roots

Answer 74

Aeax + Bebx

Question 75

Real repeated roots

Answer 75

eax(A+bx)

Question 76

Complex conjugate

Answer 76

Erealx(AcosimX+Bsinimx)

Question 77

Is 0 a natural number

Answer 77

No

Question 78

What is the other variable that is not the explnatory variable

Answer 78

Response variable

Question 79

Another condition for point of inflection

Answer 79

First derivative same side on each side

Question 80

Less than bigger

Answer 80

Greater than smaller for werid stats questions

Question 81

If x is an integer what does that mean for 2x

Answer 81

that it is also an integer

Question 82

Curve is not continuous in that interval or

Answer 82

X not defined at 5

Question 83

What does being outside range mean

Answer 83

Hard to estimate

Question 84

What shows an integral is improper

Answer 84

Unbounded interval as upper limit is infinity and a limit is required to calculate it

Question 85

Why would poisson not be suitable for 1,2,3,4,5

Answer 85

P(x>5) would have substantial probability

Question 86

In 2 way do you combine collumns or rows

Answer 86

Either whichever one has most dof

Question 87

3x+2

Answer 87

Times variance by 9 (pgf plug in x cubed and times by x squared)

Question 88

Why do you always take away 1 dof

Answer 88

As totals agree

Question 89

Format for polar cooordinates

Answer 89

(r,theta)

Question 90

What do you do if it tells you to write down an equation of motion

Answer 90

F=ma

Question 91

What does a light string mean

Answer 91

Constant T

Question 92

What does a inextensible string mean

Answer 92

Constatn A

Question 93

What to mark on a normal gragph

Answer 93

Either mark 1sd each side (point of inflection) or 3 where most data lies between

Question 94

H0 in 2 way

Answer 94

No association so if it exceeds critical value there is an association

Question 95

GOF H0

Answer 95

Suitable model so if it exceeds then not suitable

Question 96

What to not mention for poisson

Answer 96

Mean and variacn same

Question 97

What does r show

Answer 97

Linear assoication between 2 variables