Bugs in apple calculator

diep · 2011-05-10, 00:02

hi,

I noticed it a lot already. Bugs in the apple calculator at my macbookpro. I have os/x 10.4.11

First how it goes correct. I type in manual by mouse:

10 Y^X 1.24 = 17.....

Now when it goes wrong. I give in 2048^2 * 42 then take log of that,
divided by 2048^2 and the log of that. This gives 1.245....

I store that with M+

Then i give in by hand 10 Y^X MR = 101

I give C to clear screen. Give in 10. to the power MR (1.245...) again 101 as answer.

Maybe not calculate your mortgage with apple sirs!

Regards,
Vincent

science_man_88 · 2011-05-10, 00:07

Quote:

Originally Posted by diep

hi,

I noticed it a lot already. Bugs in the apple calculator at my macbookpro. I have os/x 10.4.11

First how it goes correct. I type in manual by mouse:

10 Y^X 1.24 = 17.....

Now when it goes wrong. I give in 2048^2 * 42 then take log of that,
divided by 2048^2 and the log of that. This gives 1.245....

I store that with M+

Then i give in by hand 10 Y^X MR = 101

I give C to clear screen. Give in 10. to the power MR (1.245...) again 101 as answer.

Maybe not calculate your mortgage with apple sirs!

Regards,
Vincent

first of all what type of log I can't figure it out.

science_man_88 · 2011-05-10, 00:27

Quote:

Originally Posted by science_man_88

first of all what type of log I can't figure it out.

figured out what was mean't in the log part I think.

Christenson · 2011-05-10, 02:05

Quote:

Originally Posted by diep

hi,

I noticed it a lot already. Bugs in the apple calculator at my macbookpro. I have os/x 10.4.11

First how it goes correct. I type in manual by mouse:

10 Y^X 1.24 = 17.....

Now when it goes wrong. I give in 2048^2 * 42 then take log of that,
divided by 2048^2 and the log of that. This gives 1.245....

I store that with M+

Then i give in by hand 10 Y^X MR = 101

I give C to clear screen. Give in 10. to the power MR (1.245...) again 101 as answer.

Maybe not calculate your mortgage with apple sirs!

Regards,
Vincent

Doesn't duplicate on WinXP Calculator 5.1. Please indicate that you are dividing by log10(2048^2), should get 17.583....

Batalov · 2011-05-10, 02:23

FWIW, it is easy to confuse a dumb and clever design.

-- Example! (in voice of Julius and Vincent from Pulp Fiction)
In Win calc, try typing 2+3*5 =>
you will get 17 in scientific mode, but 25 in standard mode.
Is that dumb? Not necessarily!

In some (or most?) modes log button is treated as an immediate postfix to the number on the screen. This makes possible to do 5 * 3 <log> where log will be applied to 3 only.

However, I have no Mac to test if this applies to your problem. ymmv.

Christenson · 2011-05-10, 02:33

I loved having my result erased when I switched to scientific mode to get the log function in Win Calc!

science_man_88 · 2011-05-10, 19:44

Quote:

Originally Posted by Christenson

Doesn't duplicate on WinXP Calculator 5.1. Please indicate that you are dividing by log10(2048^2), should get 17.583....

I only figured the log part as:

Code:

(14:42)>log(2048^2*42)/log(2048^2)
%181 = 1.245105337399034558586168557

just to note this should work out to the 1.24... for any log base but I still don't know the rest.

cheesehead · 2011-05-10, 21:56

Quote:

Originally Posted by Batalov

FWIW, it is easy to confuse a dumb and clever design.

-- Example! (in voice of Julius and Vincent from Pulp Fiction)
In Win calc, try typing 2+3*5 =>
you will get 17 in scientific mode, but 25 in standard mode.
Is that dumb? Not necessarily!

Scientific mode has operator precedence by default??? Can't see that in Help. Since I don't trust non-RPN grouping, I've always used = and (), so never encountered that before.

cheesehead · 2011-05-10, 21:59

Quote:

Originally Posted by Christenson

I loved having my result erased when I switched to scientific mode to get the log function in Win Calc!

Gotta use MS/MR.

2011-05-10, 00:02	#1
diep Sep 2006 The Netherlands 2⁶×11 Posts	Bugs in apple calculator hi, I noticed it a lot already. Bugs in the apple calculator at my macbookpro. I have os/x 10.4.11 First how it goes correct. I type in manual by mouse: 10 Y^X 1.24 = 17..... Now when it goes wrong. I give in 2048^2 * 42 then take log of that, divided by 2048^2 and the log of that. This gives 1.245.... I store that with M+ Then i give in by hand 10 Y^X MR = 101 I give C to clear screen. Give in 10. to the power MR (1.245...) again 101 as answer. Maybe not calculate your mortgage with apple sirs! Regards, Vincent

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2011-05-10, 02:23	#5
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2²·2,333 Posts	FWIW, it is easy to confuse a dumb and clever design. -- Example! (in voice of Julius and Vincent from Pulp Fiction) In Win calc, try typing 2+35 => you will get 17 in scientific mode, but 25 in standard mode. Is that dumb? Not necessarily! In some (or most?) modes log button is treated as an immediate postfix to the number on the screen. This makes possible to do 5 3 <log> where log will be applied to 3 only. However, I have no Mac to test if this applies to your problem. ymmv.

2011-05-10, 02:33	#6
Christenson Dec 2010 Monticello 5·359 Posts	I loved having my result erased when I switched to scientific mode to get the log function in Win Calc!