Threaded Mode | Linear Mode

John Colvin · (This post was last modified: 02-14-2014 12:26 AM by John Colvin.)

I was under the impression that the upper value limit of 1000 for numerical Sigma was removed
in the latest firmware update (I have version 5447 11-25-2013), but when I
evaluate sum(x, x, 1, 1001) (CAS mode), I still get the invalid dimension error.
Works fine for upper value of 1000 or less. The firmware update list states
that this problem was fixed. Is there something I am doing wrong here?

02-20-2014, 12:48 PM

Nearly one week has gone since the question above - nobody out there with an answer?

Han · (This post was last modified: 02-20-2014 05:11 PM by Han.)

The bug does not appear when using the template for a sum. So it looks like they fixed parts, but did not get all the cases.

John Colvin · 02-20-2014, 11:10 PM

(02-20-2014 05:10 PM)Han Wrote: The bug does not appear when using the template for a sum. So it looks like they fixed parts, but did not get all the cases.

I still get the error, even when using the Sigma template(in CAS mode).

Miguel Toro · 02-21-2014, 01:41 PM

(02-20-2014 11:10 PM)John Colvin Wrote:
(02-20-2014 05:10 PM)Han Wrote: The bug does not appear when using the template for a sum. So it looks like they fixed parts, but did not get all the cases.

I still get the error, even when using the Sigma template(in CAS mode).

There are differences between the real Prime and the emulator even if they have the same version (5447).

In CAS :

On the Emulator: choose sigma from the templates ==> ∑() then ∑(x,x,1,1001) [ENTER] ==> 501501

On the Prime : choose sigma from the templates ==> Sigma template to fill out, then x 1 x 1001 [ENTER] ==> "∑(x,x,1,1001) Error: Invalid dimension"

Miguel

JimS · 02-23-2014, 11:23 PM

Hi John,
As HAN pointed out it's a CAS problem in the Prime.
Sigma or sum works in all it's forms only in HOME mode on the Prime.
Guess we will have to wait a bit longer for a complete fix.
Jim

John Colvin · (This post was last modified: 02-24-2014 12:08 AM by John Colvin.)

(02-23-2014 11:23 PM)JimS Wrote: Hi John,
As HAN pointed out it's a CAS problem in the Prime.
Sigma or sum works in all it's forms only in HOME mode on the Prime.
Guess we will have to wait a bit longer for a complete fix.
Jim

Jim
I see what I was doing wrong now. I was entering the index variable in lower case in HOME view which gives an immediate error. You are
right. The problem has been fixed in HOME view, and that is good enough for me.