How to compute this on a Ti-nSpire?
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mpowell
Sep 6, 2010, 4:44:31 AM9/6/10
to tinspire
Is there a way to do this on the Ti-nSpire?
Two adjacent houses in a normal city
street have numbers which multiply
together to give 1224. What are the
numbers on the houses?
Two adjacent houses in a normal city
street have numbers which multiply
together to give 1224. What are the
numbers on the houses?
Nelson Sousa
Sep 6, 2010, 4:52:37 AM9/6/10
to tins...@googlegroups.com
What you can do is create a program to go through every case and get the correct solution, but using brute force is not very elegant.
Nelson
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Helen K
Sep 6, 2010, 5:13:01 AM9/6/10
to tinspire
Solve (x(x+2)=1224,x)
answers 34, -36.
Take the positive answer.
34 and 36.
Cheers
Helen
On Sep 6, 6:52 pm, Nelson Sousa <nso...@gmail.com> wrote:
> you can start by factoring 1224 and get the list of prime factors. That the
> Nspire will do. But it won't do the reasoning to find the answer..
>
> What you can do is create a program to go through every case and get the
> correct solution, but using brute force is not very elegant.
>
> Nelson
>
>
>
> On Mon, Sep 6, 2010 at 09:44, mpowell <mpow...@rogershsa.com> wrote:
> > Is there a way to do this on the Ti-nSpire?
>
> > Two adjacent houses in a normal city
> > street have numbers which multiply
> > together to give 1224. What are the
> > numbers on the houses?
>
> > --
> > To post to this group, send email to tins...@googlegroups.com
> > To unsubscribe send email to tinspire+u...@googlegroups.com<tinspire%2Bunsubscribe@googlegroups.com>
>
> - Show quoted text -
answers 34, -36.
Take the positive answer.
34 and 36.
Cheers
Helen
On Sep 6, 6:52 pm, Nelson Sousa <nso...@gmail.com> wrote:
> you can start by factoring 1224 and get the list of prime factors. That the
> Nspire will do. But it won't do the reasoning to find the answer..
>
> What you can do is create a program to go through every case and get the
> correct solution, but using brute force is not very elegant.
>
> Nelson
>
>
>
> On Mon, Sep 6, 2010 at 09:44, mpowell <mpow...@rogershsa.com> wrote:
> > Is there a way to do this on the Ti-nSpire?
>
> > Two adjacent houses in a normal city
> > street have numbers which multiply
> > together to give 1224. What are the
> > numbers on the houses?
>
> > --
> > To post to this group, send email to tins...@googlegroups.com
> > For more options, visit this group at
> >http://groups.google.com.au/group/tinspire?hl=en-GB?hl=en-GB
> > The tns documents shared by group members are archived at
> >http://lafacroft.com/archive/nspire.php- Hide quoted text -
> >http://groups.google.com.au/group/tinspire?hl=en-GB?hl=en-GB
> > The tns documents shared by group members are archived at
>
> - Show quoted text -
Rex Bogggs
Sep 6, 2010, 5:13:46 AM9/6/10
to tins...@googlegroups.com
Wouldn't you either (a) use the Nspire to
solve n(n+2) = 1224 (since adjacent houses usually have numbers that differ by
2) or (b) as Nelson said, or (c) turn off the calc and solve the
resulting simple quadratic equation by hand?
Rex
mpowell
Sep 6, 2010, 6:16:53 AM9/6/10
to tinspire
Cool, thanks.
On Sep 6, 1:13 am, Helen K <helenkilg...@hotmail.com> wrote:
> Solve (x(x+2)=1224,x)
> answers 34, -36.
> Take the positive answer.
> 34 and 36.
> Cheers
> Helen
>
> On Sep 6, 6:52 pm, Nelson Sousa <nso...@gmail.com> wrote:
>
> > you can start by factoring 1224 and get the list of prime factors. That the
> > Nspire will do. But it won't do the reasoning to find the answer..
>
> > What you can do is create a program to go through every case and get the
> > correct solution, but using brute force is not very elegant.
>
> > Nelson
>
> > On Mon, Sep 6, 2010 at 09:44, mpowell <mpow...@rogershsa.com> wrote:
> > > Is there a way to do this on the Ti-nSpire?
>
> > > Two adjacent houses in a normal city
> > > street have numbers which multiply
> > > together to give 1224. What are the
> > > numbers on the houses?
>
> > > --
> > > To post to this group, send email to tins...@googlegroups.com
> > > To unsubscribe send email to tinspire+u...@googlegroups.com<tinspire%2Bunsubscr...@googlegroups.com>
On Sep 6, 1:13 am, Helen K <helenkilg...@hotmail.com> wrote:
> Solve (x(x+2)=1224,x)
> answers 34, -36.
> Take the positive answer.
> 34 and 36.
> Cheers
> Helen
>
> On Sep 6, 6:52 pm, Nelson Sousa <nso...@gmail.com> wrote:
>
> > you can start by factoring 1224 and get the list of prime factors. That the
> > Nspire will do. But it won't do the reasoning to find the answer..
>
> > What you can do is create a program to go through every case and get the
> > correct solution, but using brute force is not very elegant.
>
> > Nelson
>
> > On Mon, Sep 6, 2010 at 09:44, mpowell <mpow...@rogershsa.com> wrote:
> > > Is there a way to do this on the Ti-nSpire?
>
> > > Two adjacent houses in a normal city
> > > street have numbers which multiply
> > > together to give 1224. What are the
> > > numbers on the houses?
>
> > > --
> > > To post to this group, send email to tins...@googlegroups.com
> > > For more options, visit this group at
> > >http://groups.google.com.au/group/tinspire?hl=en-GB?hl=en-GB
> > > The tns documents shared by group members are archived at
> > >http://lafacroft.com/archive/nspire.php-Hide quoted text -
> > >http://groups.google.com.au/group/tinspire?hl=en-GB?hl=en-GB
> > > The tns documents shared by group members are archived at
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