MISTAKES

Question 1

MAKE SURE TO MARK MINIMUM MASIMUM AND ALL POINTS OF INTERSECTION WHEN LABELIMG

Question 2

If something not divisible by something, then 4 x k + 1 2 or 3 is always not divisible, use common sense

Question 3

Whenever giving example if something is have to RELATE BACK TO CONTEST

Answer 3

So like why stratified better, in this scanrio csn test all year group age types

Question 4

For probability write EVEY COMBO OUT FIRST DONT JUMP

Question 5

Make direct comparisons

Question 6

Why is more children ! Lit because more babies so as more population who are young more children can be made

Question 7

Stretch in y axis

Answer 7

NO STRETCH PARALLEL TO Y AXIS

Question 8

2 arrow thing

Answer 8

If this means that, and I put it back other way is it tru

So anything less than 1 won’t mean ln y is 0
But ln y less than 0 does mean y is less than 1

And this means x is 2, x is 2 also means its0 so Yh

Question 9

Set notation =

Answer 9

Bracket XER : notation close bracket and again if union

Question 10

Okay so model from 100

Answer 10

A is 75 because 25 is the value when t is VERY LARGE, (as it gets very small), thus 25 is the ambient temperature ie the room temp

Question 11

If it is a rate of decrease, then gotta be what sign

Answer 11

Negative

Question 12

Make sure to read what variable itd asking for!

Question 13

Remember when pulley drop

Answer 13

It hit plane, tension becomes 0, now into force is weight so accelrwtion is g, will slow down until it hits 0, then accelerate downwards again , and you want distance between it starting and slowing down to hit 0

Question 14

SAYS SHOW INITAL SPEED IS 4 EVEN THO VELOICTY WAS -4 HOW DOES THIS SHOW SPEED

Answer 14

BECAUSE SPPEE IS JUST MAGNITUDE BBV

Question 15

Prove thst something csn never be at somewhere els

Answer 15

Find an expression thst makes a square

As a result if that swaure is negative it csn’t be

KEEP SAME ACCELERATION HE HASNT CHSNGDD

Question 16

Simplify things before proceeding

Answer 16

Makes it easier

Question 17

Remmeber thst with ages the UPPER BOUND IS

Answer 17

The next value up!

Question 18

If you want to say because less susceptible to outleirs, you have to be more specific

Answer 18

So say in the this category

Question 19

Large data set how to compar e

Answer 19

It shows change ein eyes, so find the greatest difference

Question 20

Why is there not an increases in the bus

Answer 20

The ratio is roughly the same as ratio for increases in people’s that’s why, so check this too!

Question 21

Normal to curves at minimum points or maximum?

Answer 21

HERE GRSDIENT 0, SO NO GRSDIENT, SND ITS LIT JUST THE X LIME GOING THROUGH

Question 22

TO SHOW VECTORS ARE PARALLEL, SCAM AND USE GRADIENRS

Answer 22

JUST USE COORDINATES AND GRSDIENTS BRUV PLEASE!

Question 23

REMMEBER LOG CAN ONKY BE

Answer 23

ABIVE 0

Question 24

MAKE SURE TO USE ARROWS TO SHOW DIRECTION VELOCITY! MAKE SURE ALL CONSISTENT

Question 25

Improvements for model can be

Answer 25

• include more accurate value for g!
• (include variable resistance rather than constant as it chsnges with v)
  -include friction at the pulley more accurate

Include dimension of the pulley so itsnot parallel to the table?