HELP MATHS PROBLEM need really smart maths people

Off-topic
21

i would use those rules but i dont know how to graph them !!

22

OK a clue, although I will not do the assignment for you. ( Because I would be annoyed if my students used the same tactics. It is more important that I know they can’t do it, than to know their uncle can. )

1000 =10 ^ 3

therefore: log 1000 (base 10) =3

and more generally

y =b ^ x

so log y ( base b) =x

OK?

Nao

23

i dont think we have to graph them

yea im gonna use the trap rule, much easier

24

You don’t need to graph the trapezium rule. You have to make a table with two rows and many columns. In the upper column you have t in the lower you have v. Then, you put the smallest value of t(0) in the left row of the upper column and the largest value of t(depends on k) in the right row of the column. Then you divide the largest value of t by the number of values of t that you will be testing and increase t each time, putting it in the consecutive row.
Illustration from t = 0 to t = 4

t 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
v 80 75 68 an so on 0

Then, for each value of t find the value of v which it will give.
Then use the trapezium rule to find an estimate. I’ll post it in a second(if you haven’t found a better solution while I was typing this).

25

Are you a teacher, Naomi?

26

i thpought i could help bt its a saturday and i cant to that porblem

27

haha

dont worry guys, i worked it out !!

THANKS

28

Well Sherlock…
I give a certain amount of university lecturies , mainly in physics, but also can at times get involved in some of the easier mathematics.

Nao

29

this thread is so confusing to my simple mind :sunglasses:

30

Thanks to everyone who helped, without doing his homework for him. Great tutoring! Unfortunately it’s all over my head so I would have been useless anyway.

Based on the fact that it’s a math (or maths) problem, I don’t think the method of braking is relevant, nor does it have to be realistic as long as the math is right. At least the plane isn’t landing on a conveyor belt… :slight_smile:

31

i would love to be able to say: “you may all be very good at maths and blow me away with complicated sums, but when it comes to…”

But honestly i have no area of expertise that is even summountable to such mathamatical prowess. I used to do maths using words because i hated it so much, then i could make stories.

32

You only knew that because of the puff of tyre smoke didn’t you? :smiley:

Nao