[Blindmath] A Student's Question

Sat Nov 12 19:39:37 UTC 2016

Error 404

On 11/12/16, Bill Dengler via Blindmath <blindmath at nfbnet.org> wrote:
> For some reason, I think Sabra would like this:
> https://webcache.googleusercontent.com/search?q=cache:Eb7_N5t3ZHcJ:https://www.agecon.purdue.edu/crd/localgov/second%2520level%2520pages/indiana_pi_story.htm+&cd=10&hl=en&ct=clnk&gl=us
> <https://webcache.googleusercontent.com/search?q=cache:Eb7_N5t3ZHcJ:https://www.agecon.purdue.edu/crd/localgov/second%20level%20pages/indiana_pi_story.htm+&cd=10&hl=en&ct=clnk&gl=us&client=safari>
>
> Bill
>> On Nov 12, 2016, at 6:40 AM, Dzhovani via Blindmath <blindmath at nfbnet.org>
>> wrote:
>>
>> It comes from 22 divided by 7 as a useful approximation.
>> On 12.11.2016 г. 05:11 ч., Steve Jacobson via Blindmath wrote:
>>> All,
>>>
>>> I suspect that the confusion is coming from the fact that particularly
>>> before calculators were common many people use 3-1/7 or 22/7 as the value
>>> for pi.  Using 22/7 is particularly more convenient when doing
>>> calculations
>>> on paper or in one's head but is less accurate.  The decimal value of
>>> 3-1/7
>>> is a repeating decimal of 3.142857142857 and so on and could be rounded
>>> as
>>> 3.14286.  I suspect this is the number referred to by the professor
>>> rather
>>> than 3.14628, but I really don't understand why that number would be used
>>> on
>>> a calculator rather than 3.14159.  Having said that, I can see where one
>>> might multiply by 22 and divide by 7 even if that is not quite as
>>> accurate.
>>> The professor may have had a reason for taking the approach he did.
>>>
>>> Best regards,
>>>
>>> Steve Jacobson
>>>
>>> -----Original Message-----
>>> From: Blindmath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of Sabra
>>> Ewing via Blindmath
>>> Sent: Friday, November 11, 2016 5:49 PM
>>> To: Blind Math list for those interested in mathematics
>>> <blindmath at nfbnet.org>
>>> Cc: Sabra Ewing <sabra1023 at gmail.com>
>>> Subject: Re: [Blindmath] A Student's Question
>>>
>>> I have no idea where it comes from. It is 3.146 and then the 28 comes
>>> from
>>> somewhere. I'm not the one who picked it. I just know that for basically
>>> every math class I have been in, that is what they say to use for pie.
>>> Ask
>>> Professor MCcarthy. He probably knows.
>>>
>>> Sabra Ewing
>>>
>>>> On Nov 11, 2016, at 5:45 PM, Amanda Lacy via Blindmath
>>> <blindmath at nfbnet.org> wrote:
>>>> How do you get 3.14628 by rounding 3.14159...?
>>>>
>>>> Amanda
>>>>
>>>>> On 11/11/16, Sabra Ewing via Blindmath <blindmath at nfbnet.org> wrote:
>>>>> All right, it is it repeating then, but a lot of math classes are using
>>>>> 3.14628 if you don't have a Calculator with the pie button. I guess
>>>>> that
>>> is
>>>>> a rounded value or something. And it's the Sa circumference to the
>>> diameter.
>>>>> You were quibbling over the decimal number when that is more important.
>>>>>
>>>>> Sabra Ewing
>>>>>
>>>>>> On Nov 11, 2016, at 2:05 PM, Bill Dengler <codeofdusk at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>> 3.14628 repeating?
>>>>>> No Sabra. NO.
>>>>>> http://enwp.org/pi
>>>>>>
>>>>>> Bill
>>>>>>> On Nov 11, 2016, at 7:36 PM, Sabra Ewing via Blindmath
>>>>>>> <blindmath at nfbnet.org> wrote:
>>>>>>>
>>>>>>> Yes, that is for six followed by P. It is not the word pie. It is a
>>> Greek
>>>>>>> symbol that has a constant of 3.14628 repeating. Someone came up with
>>> it
>>>>>>> by comparing a circles ark to its circumference or something like
>>>>>>> that.
>>>>>>>
>>>>>>> Sabra Ewing
>>>>>>>
>>>>>>>> On Nov 11, 2016, at 9:40 AM, Zach via Blindmath
>>>>>>>> <blindmath at nfbnet.org>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>> When I use the Nemeth tutorial on my BrailleNote Apex it says '46
>>> 1234'
>>>>>>>> is
>>>>>>>> pi.
>>>>>>>>
>>>>>>>> Zachary Mason
>>>>>>>> M.S. Student
>>>>>>>> Animal and Dairy Sciences
>>>>>>>> Mississippi State University
>>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: Blindmath [mailto:blindmath-bounces at nfbnet.org] On Behalf Of
>>>>>>>> derek
>>>>>>>> riemer via Blindmath
>>>>>>>> Sent: Thursday, September 29, 2016 1:35 PM
>>>>>>>> To: Blind Math list for those interested in mathematics
>>>>>>>> <blindmath at nfbnet.org>
>>>>>>>> Cc: derek riemer <Derek.Riemer at Colorado.EDU>
>>>>>>>> Subject: Re: [Blindmath] A Student's Question
>>>>>>>>
>>>>>>>> No.
>>>>>>>>
>>>>>>>> .p would probably be written as (46, 56 1234) or maybe evenn (456
>>>>>>>> 256
>>>>>>>> 1234)
>>>>>>>>
>>>>>>>> I've never seen this in mathematics though. I don't know if it's
>>> valid.
>>>>>>>>
>>>>>>>>> On 9/29/2016 12:15 PM, ALLEN PURVIN via Blindmath wrote:
>>>>>>>>> Hi,
>>>>>>>>> A student asked me a Nemeth question and I do not know the answer.
>>>>>>>>> I
>>>>>>>>> am
>>>>>>>> sure people here do, so thank you.
>>>>>>>>> What is the difference between .p (decimal point, p) and pi (the
>>> Greek
>>>>>>>> symbol) in Nemeth?  Aren't they both 4,6; 1,2,3,4?
>>>>>>>>> I understand that in context, the distinction may be more clear.
>>>>>>>>> But
>>>>>>>> without?
>>>>>>>>> Thank you,
>>>>>>>>> - allen
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>>>>>>>> --
>>>>>>>>
>>> ------------------------------------------------------------------------
>>>>>>>>
>>>>>>>> Derek Riemer
>>>>>>>>
>>>>>>>> * Department of computer science, third year undergraduate student.
>>>>>>>> * Proud user of the NVDA screen reader.
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>>>>>>>>
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>>
>> ---
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