Math's Question

  Poloman69 21:01 22 Mar 2004

I know that this has nothing to do with computers, but really could do with some help.
I have an assignment in tomorrow and want to check a question:

the spread of a disease in a large population can be modelled by the equation:

If N(t) = 2e0.6t (t>0) ---- And N(t) = 1000

At the end of which day after the start of the epidemic at t=0 is it predicted that 1000 people would have contracted the disease.

I get the answer 274.40 days - is this right?

  Stuartli 09:52 23 Mar 2004

I don't think you will get many responses to that one....:-)

  Pesala 10:03 23 Mar 2004

click here

Multiple posts can only be checked resolved if you first reply to your own post.

  IClaudio 10:04 23 Mar 2004

but my partner is a Maths Teacher and she may well be able to help (though Stats is her nightmare!)

I'll let you know as soon as I can.

Sorry, only just seen this and it may be too late for you :( But at least you'll know if you were right :)

  IClaudio 10:07 23 Mar 2004


  Wilham 12:31 23 Mar 2004

e to power 0.6t=500
Take log natural both sides...(calc symbol ln)
0.6t = ln 500

t= 10.36 to 4sf
Now read original Q to check form of answer needed.

  stlucia 13:25 23 Mar 2004

I think the answer is about 16.6 days. Any advance on that?

  Andrew 13:42 23 Mar 2004

If it helps, I agree with Wilhem. Pleasant change from the usual work, although I did need Excel for the log calculations. Seem to have lost that log table book we all used to have at school!

  Wilham 14:01 23 Mar 2004

It will cheer me up if someone will read fully Polomans' original question and give the required answer.

  IClaudio 14:07 23 Mar 2004

...and I bet you had jumpers for goal posts, too (like me ;))

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