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#1 Re: Help Me ! » Base 3 to Base 9 - Confusion =( » 2008-01-20 12:56:59

savoy123

Thank you guys for going into the trouble to explain it to me. It's helped me a lot and I have a clear understanding of it now.
Thanks again! smile

#2 Help Me ! » Base 3 to Base 9 - Confusion =( » 2008-01-20 05:57:38

savoy123
Replies: 3

My apologies for the wrong thread before..

I am extremely confused about this question.
I think my main problem is, I don't understand what the question means. sad Hopefully someone would be kind enough to briefly show the steps in which I could learn from.

The base three representation of a number x is 12112211122211112222.
Determine the left most digit of the base nine representation of x.

I've been explained with a method with the word "radix" in which I have never heard of. roll Hopefully you guys don't go too advanced on me!:P

But any help is deeply appreciated.

Thanks.

#3 Re: Help Me ! » NOT Looking for an Answer - Length of Quadratic. » 2008-01-13 02:33:51

savoy123

Hey again everyone. smile
First of all, thanks for all the help.

Secondly, I forgot to add that the question asked me to find the APPROXIMATE cost to repair the whole track (so following $100 per meter).

mikau wrote:

so we could figure it out. The question is, how bad do you need to know?

I wasn't worried about the answer but simply developing a way to find the approximate cost of the roller coaster track. big_smile

I have done derivatives and such but note that I'm doing maths 1 year ahead of me.

Some posted methods seem quite complicated but I'll try work through them.

Thanks again for all the help and further suggestions are appreciated.

#4 Help Me ! » NOT Looking for an Answer - Length of Quadratic. » 2008-01-12 21:54:35

savoy123
Replies: 12

Hello everyone. smile

I am looking for a suggestion on a way I could estimate a length of a parabola. I know it's probably not a pretty good description so here is a picture of the problem.

Imagine that this is a roller coaster track. It costs $100 per metre.
NOTE that sections AB, BC, CD is a parabola. Also, point A is inclined at an angle of 10° in which I'm not sure what it means. sad
How would I attempt to calculate the approximate cost of the new track? I've thought about using Pythagoras but I think it would be too inaccurate.
probms8.gif

Thank you for any suggestions on this challenging question.

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