Sunday, November 6, 2016

TI-84 Plus CE: OS Update

TI-84 Plus CE Update:  OS 5.2

There is a new OS for the TI-84 Plus CE:  5.2.1.0042.  Many thanks to Rich Grubbs who emailed me about this recent OS update.  

Link:

According to Texas Instruments, this update corrects issues found in the Sequence Mode editor.  

This is an extension of OS 5.2, which added new functions, found in the catalog:

eval(:  Evaluates an expression and returns the answer in a string format.  The expression must result in a real result.

Example:

eval(6*√11)→Str1  stores 19.899749 in Str1

eval(6*√-11)→Str1 returns an Error.  This happens even when the complex mode (a+bi or re^(θi)) is selected

toString(:  Similar to eval( but handles matrices, lists, and complex numbers.

What is nice that the Prgm, I/O command lists adds eval(, expr(, toString(, and String>Equ( to the menu, so no more scrolling through the catalog during programming.

Wait:  Pauses the program for a specified amount of seconds.  Wait is found in the Prgrm, CTL menu under option A.  As a consequence, IS>(, DS<(, etc, are pushed one command below.



Example Program:  Program TST4224
For(I,1,5)
ClrHome
Output(1,1,I)
Wait 1
End

I plan to update the TIMER and STOPWTCH programs in short order. 

invNorm(:  This command has been updated.  You can use RIGHT, CENTER, or LEFT to determine which part of the normal curve is affected.

Example:  (With σ = 1 and μ = 0)
invNorm(.85, LEFT) returns 1.03643338
invNorm(.85, CENTER) returns {-1.439531471, 1.439531471}
invNorm(.85, RIGHT) returns -1.03643338

Caution:  LEFT, CENTER, and RIGHT are not available for invT( or invBinom(.

Sequences:  The sequence editor now allows up to two initial conditions, double deep recurring sequences. 

The example sequence shown is u(n+2) = .5*u(n) + 2*u(n+1), with u(1) = 0, u(2) = 0.5  (5 points are plotted)




Apps for the Vernier EasyData, TI-Innovator, TI Test Guard, SmartPad, and language localizations are updated. 

Source:  Cemetech  (Retrieved November 6, 2016) 

Caution:
When updating, make sure you backup up and/or save your files because the update will erase everything stored in RAM.  

This blog is property of Edward Shore, 2016


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