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+--- Thread: Contradiction between CAS and Home (/thread-8653.html)
Contradiction between CAS and Home - COB160 - 07-09-2017 10:12 AM
In CAS mode if I type
(1-e^(-1/2))/(1-e^-2)
the result is
(e^(1/2))^3/((e^(1/2))^3+(e^(1/2))^2+(e^(1/2))+1)
wich is 0.174326466693
In home mode if I type the same
(1-e^(-1/2))/(1-e^-2)
the result is
0.455054233923 that is the result I was looking for.
How can this be possible?
RE: Contradiction between CAS and Home - toml_12953 - 07-09-2017 10:39 AM
(07-09-2017 10:12 AM)COB160 Wrote: In CAS mode if I type
(1-e^(-1/2))/(1-e^-2)
the result is
(e^(1/2))^3/((e^(1/2))^3+(e^(1/2))^2+(e^(1/2))+1)
wich is 0.174326466693
In home mode if I type the same
(1-e^(-1/2))/(1-e^-2)
the result is
0.455054233923 that is the result I was looking for.
How can this be possible?
I get 0.455... in both modes.
RE: Contradiction between CAS and Home - COB160 - 07-09-2017 10:46 AM
(07-09-2017 10:39 AM)toml_12953 Wrote:(07-09-2017 10:12 AM)COB160 Wrote: In CAS mode if I type
(1-e^(-1/2))/(1-e^-2)
the result is
(e^(1/2))^3/((e^(1/2))^3+(e^(1/2))^2+(e^(1/2))+1)
wich is 0.174326466693
In home mode if I type the same
(1-e^(-1/2))/(1-e^-2)
the result is
0.455054233923 that is the result I was looking for.
How can this be possible?
I get 0.455... in both modes.
Type (1-e^(-1/2))/(1-e^-2) in CAS mode click enter and u will get (e^(1/2))^3/((e^(1/2))^3+(e^(1/2))^2+(e^(1/2))+1), then go to home-menu-get from CAS-enter to obtain the numerical value of the result
RE: Contradiction between CAS and Home - DrD - 07-09-2017 12:41 PM
If the expression is entered in CAS , then use [Shift][Enter], the approximate value returned shows up with the same value as returned when entered in HOME, (on my emulator).
RE: Contradiction between CAS and Home - COB160 - 07-09-2017 12:52 PM
(07-09-2017 12:41 PM)DrD Wrote: If the expression is entered in CAS , then use [Shift][Enter], the approximate value returned shows up with the same value as returned when entered in HOME, (on my emulator).
It is correct, but why when I import the same formula in home mode, it changes the result?
RE: Contradiction between CAS and Home - Freire - 07-10-2017 07:00 AM
I was not able to reproduce the error either. All I get is 0.455054233923 every way I try.
RE: Contradiction between CAS and Home - COB160 - 07-10-2017 12:42 PM
(07-10-2017 07:00 AM)Freire Wrote: I was not able to reproduce the error either. All I get is 0.455054233923 every way I try.
Could my calculator be damaged?
RE: Contradiction between CAS and Home - Joe Horn - 07-10-2017 06:10 PM
COB160: What firmware version are you using?
RE: Contradiction between CAS and Home - COB160 - 07-10-2017 08:05 PM
(07-10-2017 06:10 PM)Joe Horn Wrote: COB160: What firmware version are you using?
I don know, I never update the calculator since i bought it! Another strange things I noticed is that there are lines that seem interferences when I tap th screen with the finger
RE: Contradiction between CAS and Home - webmasterpdx - 07-10-2017 09:51 PM
update your firmware
RE: Contradiction between CAS and Home - COB160 - 07-10-2017 10:22 PM
(07-10-2017 09:51 PM)webmasterpdx Wrote: update your firmware
I am Mac OS user, is it possible to do it anyway?
RE: Contradiction between CAS and Home - Joe Horn - 07-10-2017 11:52 PM
(07-10-2017 08:05 PM)COB160 Wrote:(07-10-2017 06:10 PM)Joe Horn Wrote: COB160: What firmware version are you using?I don know
Press Home, Help, Tree (soft key), up-cursor, Enter. What "Software Version" is shown?
RE: Contradiction between CAS and Home - COB160 - 07-11-2017 07:13 AM
(07-10-2017 11:52 PM)Joe Horn Wrote:(07-10-2017 08:05 PM)COB160 Wrote: I don know
Press Home, Help, Tree (soft key), up-cursor, Enter. What "Software Version" is shown?
It is written:
Software version: 2015 6 17 (8151)
Hardware version: C
CAS Version:1.1.2-11
Serial Number...
Operating System: V0.041.558
RE: Contradiction between CAS and Home - COB160 - 07-11-2017 07:48 AM
(07-11-2017 07:13 AM)COB160 Wrote:(07-10-2017 11:52 PM)Joe Horn Wrote: Press Home, Help, Tree (soft key), up-cursor, Enter. What "Software Version" is shown?
It is written:
Software version: 2015 6 17 (8151)
Hardware version: C
CAS Version:1.1.2-11
Serial Number...
Operating System: V0.041.558
I downloaded HP Connectivity Kit for Mac OS, but I cannot upgrade the calculator... I have read that if the version firmware I have is too old, I had to upgrade the calculator from windows.
RE: Contradiction between CAS and Home - COB160 - 07-11-2017 07:49 AM
If I have lines on the screen when i scroll history data, could the upgrade fix it?
RE: Contradiction between CAS and Home - COB160 - 07-11-2017 12:44 PM
Here are the lines I told about
https://www.dropbox.com/s/acfvmdpkpk1b8i2/Lines%20HP%20Prime.MOV?dl=0
Is it normal?