version appears on the multiple message screen but the original
message was posted. I hit "reply" and the edited version comes up.
Anyway,
1) No more messages that use semicolon for division will be approved
by Brian. I hope Pat doesn't either.
2) Atadricourses may be correct but is to produce this rule that he
has been sadistically vexing us with. No use arguing. If someone
produces the rule, then Atadricourses is correct. If no one produces
the rule, then Atadricourses is wrong.
3) This is becoming less relevant because it is not possible to
enter formulas into the computer with implied multiplication.
(leaving out the multiplication sign)
4) It occurred to me that all this argument relates to the missing
multiplication sign.
Regards,
Brian
--- In Math4u@yahoogroups.com, "atadricourses" <bodor7@...> wrote:
>
> [Brian has edited this message and will not approve any messages
that use a semicolon to represent division.]
>
> Hi
> you should be careful to make your meaning clear whenever dealing
with
> implied multiplication (multiplication by juxtaposition rather than
by
> an x or a dot).
> 16/2[8-3(4-2)]+1 = ?
> 16/2 [8-3(2)]+1
> 16 /2[8-6]+1
> 16 /2[2]+1 (until here you are agree, right?)
> the rule says that parentheses outrank division. so the first 2 goes
> with the second 2 , instead of going with 16.
> the expression becomes :
> 16/4 + 1
> 4 +1 = 5
> [Brian's comment: I believe Atadricourses may be correct but could
find no such rule on the Internet. It has always been my habit to
never take anyone's word for something unless proven. Experts are
wrong half the time. Leaving out the multiplication sign is keeping
me from becoming a millionaire or doing something productive. Please
avoid such ambiguity.
> I do not believe Atadricourses' wording of the rule and logic, even
if the result may be correct. I hope we waste no more time arguing
about this and that Atadricourses produces a website address with the
rule he quotes.]
>
>
> conclusion :
> 16 / 2(2) +1 =5
> and
> 16 / 2 x 2 + 1 = 17
>
>
> I give math lessons via email, fax,
>
> messenger,Skipe,phone, and believe me 90% of the
>
> members made errors when it comes to the "order of
> operations" but now , I am sure they will give the
>
> correct answer as Rolandjo.
>
> take a look at :
>
>
http://www.atadri.com/math/order/ordermultipli.jpg
> <http://www.atadri.com/math/order/ordermultipli.jpg>
>
> perhaps you'll see what I mean.
>
> My ebook about " how to excel at the order of
>
> operations" contains 100 exercises in the form of Q&A
>
> all related on how to avoid making errors while
>
> applying the order of operations.
> Bodor
> atadricourses
>
http://www.atadri.com <http://www.atadri.com/>
>
>
>
>
> --- In Math4u@yahoogroups.com, Rick <rcastrap@> wrote:
> >
> > The rule is still left-to-right. Try it with a calculator or
> > Mathematica.
> >
> > -- Rick
> >
> > --- "Brian E. Jensen" brianejensen@ wrote:
> >
> > > I just had a thought.
> > > 16/2*a =8a by math convention.
> > > But what happens if we leave out the multiplication sign
> > > 16/2a
> > > Now maybe it's wrong, but there is a tendency in my mind to
think of
> > > 2a as a
> > > term or entity and come up with 16/2a=8/a
> > > So maybe leaving out the multiplication sign was done on
purpose to
> > > trick
> > > our subconscious. I'm not so sure what the correct answer is
when a
> > > sign is
> > > omitted.
> > >
> > > Does 16/2*a equal 16/2a ?
> > > Does anyone know the rule or how to handle when the
multiplication
> > > sign is
> > > left out?
> > >
> > > Regards,
> > > Brian
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Mario Marotti" mmar62@
> > > To: math4u@yahoogroups.com
> > > Sent: Wednesday, December 05, 2007 2:38 PM
> > > Subject: RE: RE : Re: [Math4u] Math persons
> > >
> > >
> > >
> > >
> > > 16 / 2 [8 – 3 (4 – 2)] + 1
> > > = 16 / 2 [8 – 3 (2)] +1
> > > = 16 / 2 [8 – 6] +1
> > > = 16 / 2 [ ] + 1
> > > = 16 / 4 +1
> > > = 4 + 1
> > > = 5
> > >
> > > Hello!
> > > This is my first message in the group.
> > > I think the ambiguity occurs when a fraction is written like
16/2
> > > instead of
> > > using the horizontal ___ quotient line.
> > >
> > > Writing
> > >
> > > 16
> > > __
> > >
> > > 2
> > >
> > > instead of (16/2), you have no problem at all.
> > >
> > > Best regards
> > > Mario
> > >
_________________________________________________________________
> > > Express yourself instantly with MSN Messenger! Download today
it's
> > > FREE!
> > > http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
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