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Topic: Hi. I'm a student from France. I have some mathematic questions that
i don't know to solve it

Replies: 6   Last Post: Sep 3, 2013 6:12 PM

 Messages: [ Previous | Next ]
 Ken.Pledger@vuw.ac.nz Posts: 1,332 Registered: 12/3/04
Re: Hi. I'm a student from France. I have some mathematic questions that i don't know to solve it
Posted: Sep 3, 2013 6:12 PM

In article
<ken.pledger-80D970.09353504092013@news.eternal-september.org>,
Ken Pledger <ken.pledger@vuw.ac.nz> wrote:

> In article <l04rcn\$i9h\$1@news.albasani.net>,
> Peter Percival <peterxpercival@hotmail.com> wrote:
>

> > .... So you have
> >
> > a = ar + 8, and
> >
> > a/(1-r) = 18.
> >
> > Solving those gives a = 12 , and r = 1/3 ....

>
>
> Yes; or a = -12, r = 5/3....

Ugh! Then this solution must be rejected because |r| is too big. I
am ashamed. :-(

Ken Pledger.

Date Subject Author
9/3/13 Taylor De Laurent
9/3/13 Peter Percival
9/3/13 Scott Berg
9/3/13 Peter Percival
9/3/13 Ken.Pledger@vuw.ac.nz
9/3/13 Ken.Pledger@vuw.ac.nz
9/3/13 James Waldby