Searching \ for '[OT]It must be right, my calculator says so.' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: massmind.org/techref/index.htm?key=must+right+calculator
Search entire site for: 'It must be right, my calculator says so.'.

Exact match. Not showing close matches.
PICList Thread
'[OT]It must be right, my calculator says so.'
2009\04\24@054818 by cdb

flavicon
face
Doing some sining and cosining  (hmm co-sinning interesting) and my
trusty ancient Casio fx-500f informs me that the sine of 90 deg is
0.893996663, sin 45 is 0.850903524.

If anyone has a filter or waveform that isn't going to plan. just
email me the radians or degrees and my Casio will solve the problem
for you.

trigonometry inflation is running at about 20% these days, or maybe I
just need new batteries for the calculator.

This is a good reason why calculators should not be allowed in primary
school -IMHO.

Colin
--
cab,  on 24/04/2009



2009\04\24@061032 by Picbits Sales

flavicon
face
I take it you have your calculator set to Radians instead of Degrees ;-)

Let me know if it was user error in the end ......... ;-)

Dom
{Original Message removed}

2009\04\24@085011 by cdb

flavicon
face


:: I take it you have your calculator set to Radians instead of Degree

Yes, the battery is running out (an existentialist moment), and the
calculator does strange things when this happens. I'd switched it out
of binary mode and  at first I hadn't realised that Casio know best by
choosing radian mode without my say so - .

Colin
--
cdb, spam_OUTcolinTakeThisOuTspambtech-online.co.uk on 24/04/2009

Web presence: http://www.btech-online.co.uk  

Hosted by:  http://www.1and1.co.uk/?k_id=7988359







2009\04\24@164400 by John Gardner

picon face
Casio has fielded interesting calculators over the years,
notably some programmable-in-C models. All long gone,
AFAIK. Too bad.

Jack

2009\04\26@122225 by Peter

picon face
cdb <colin <at> btech-online.co.uk> writes:
> Doing some sining and cosining  (hmm co-sinning interesting) and my
> trusty ancient Casio fx-500f informs me that the sine of 90 deg is
> 0.893996663, sin 45 is 0.850903524.

Not sure what you mean, low battery will always cause trouble excepting that
most better calculators DO have a low battery indicator. Anyway don't trust your
calculator too much even with a new battery. Calculators are really 'variable'
in transcendental operation results. I only trust them after checking with an
infinite precision calculator set to a significantly higher number of digits
than those displayed by the $9 'pocket math genius'. Read more about it here:

 http://www.rskey.org/~mwsebastian/miscprj/results.htm

Peter


2009\04\26@161504 by Wouter van Ooijen

face picon face
> I only trust them after checking with an
> infinite precision calculator

I wonder how that one deals with irrational numbers?

--

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: http://www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: http://www.voti.nl/hvu

2009\04\26@174024 by Alan B. Pearce

face picon face
>> I only trust them after checking with an
>> infinite precision calculator
>
>I wonder how that one deals with irrational numbers?

I was wondering where he found one of those. ;))

2009\04\26@194747 by cdb

flavicon
face


:::::: I only trust them after checking with an
:::::: infinite precision calculator
::::::
:::: I wonder how that one deals with irrational numbers?
::::
:: I was wondering where he found one of those. ;))

I am of the opinion that all but integer maths are irrational and
illogical and bear no resemblance to the real world.

Give me three single stones and so long as I accept the concept of
each stone equals 1 I have no problem in realising that 3 = 3 and take
one away I now have two. BUT, tell me I have 1 stone and that if I
were to cut it into 3 I'd then have 0.33333333 of a stone recurring
forever. Well it gets worse when you tell me that if I multiply my
0.3333333 to get my whole stone back I lose 0.00000000000000000001 of
stone somewhere, this is obviously nonsense, and besides how do I know
that the dust from the stone breaking actually does represent
0.000000001 of my whole stone?

Then you have the math fidllers come along who back in the 1500's
spent 20 years scribbling all over bits of parchment and end up
fudging figures to get the results they have abitarily drawn out of
the air and then have the cheak to produce various lawas to explain
why statistically speaking if 2 + 2 doesn't equal 4.679 as they hoped,
I must ignore law number one and select law number five which will
with judicious losing bits of numbers into no mans land get the
required result.

You can tell why I detested at primary and secondary school
problematical maths, with my kind of thinking.

I am still convinced that those men who insisted on filling baths
sometimes together and sometimes individually cheated by sometimes
using hot water (which must run faster) and how did  I know they were
using the same size bucket? How could I be expected to know if a train
left Crewe station at 12am and had wheels with a circumference of 2' 3
and 3/8" at what time would it meet the train from Cornwall at Eustan
Station if it was travelling at 80MPH and stopped for three minutes
once, if at the age of eight I didn't know exactly where Crewe station
was? The teacher was never impressed by my argument.

Colin


--
cdb, .....colinKILLspamspam@spam@btech-online.co.uk on 27/04/2009

Web presence: http://www.btech-online.co.uk  

Hosted by:  http://www.1and1.co.uk/?k_id=7988359







2009\04\27@143737 by Peter

picon face
cdb <colin <at> btech-online.co.uk> writes:
> I am of the opinion that all but integer maths are irrational and
> illogical and bear no resemblance to the real world.

Actually maths call natural numbers [1..infinity), integer, Natural :) Negative
numbers and zero are not a part of that set ...

Peter


More... (looser matching)
- Last day of these posts
- In 2009 , 2010 only
- Today
- New search...