10 Helpful Deed Math Calculator Programs for the TI Graphing Series of Calculators
Below are some TI-83/84/85 programs that y'all can enter into your calculator for the Act Math Department. Like many of you lot, I utilize a TI-83 Plus graphing calculator, and so my instructions are customized for that estimator, simply they should work fine for the TI-84/85 serial as well. Think that the TI-89 is non allowed on the Human activity, because of its CAS (calculator algebra system) functionality! It's perfectly OK to utilise programs on your TI-83/84/85, however, because these calculators lack CAS adequacy*. ACT Calculator Policy*(EDIT 4/half dozen/17): There is a fiddling-known rule cached in the FAQ and Help section of the Human action website that the program "must not have more than 25 lines of logical text" and "must not telephone call on whatsoever other programs." Due to the fact that few exam-takers and proctors are aware of this rule, it is unclear whether this brake will be strictly enforced. Here is the exact text:
"Q10: Are there any rules that allowed mathematics-related programs must follow? A: Programs must exist written in the language of the calculator. Programs written in a different language, compiled, and loaded onto the calculator are not allowed. In this way, the programs tin be examined on the computer and volition utilize calculator functions. Programs must not exist lengthy. The limit is 25 logical lines of lawmaking. Programs cannot call some other programme. Techniques such as compressing code into a data argument are not allowed every bit a way of getting around this limit. Programs are allowed to change the value of system variables so that results may, for example, be graphed through the normal calculator graphing interface."
Unfortunately, although there is the option of using a TI Connect cable (for the TI-83 serial) / micro USB cable (for the TI-84 series and higher up) and downloading the TI Connect software, this software is buggy / hard to use for some, and doesn't work on many operating systems. If you can get the software to work, then y'all can download additional formulas for this software here. If you want to effort it out, then check out this instructional video past Brooke Hanson from SuperTutor Goggle box, who explains every step of the process. Feel costless to give this software a effort if you lot like, simply hither, I will be educational activity you how to enter some of these programs the old-fashioned way: by paw.
If you lot have a friend who has programmed these formulas into his/her calculator already, then you tin can also apply a Link Cablevision (TI-83) or Mini USB to Mini USB Cablevision (TI-84 and to a higher place) to transfer the programs straight from your friend'due south calculator to yours.
In my opinion, the key is quality over quantity. It's like shooting fish in a barrel to simply download every program you can find, but information technology helps to find a few useful programs and stick with those.
Whatsoever suggestions for additional programs, delight let me know at mcelroy@post.harvard.edu. If possible, please include the source code of the plan(south)!
HOW TO ENTER THE FORMULAS INTO YOUR Estimator
Imagine your Texas Instruments calculator buttons as a series of rows (across) and columns (upwards and downwardly). This will help me point you lot toward the correct buttons.
The program "PRGM" push is row 3, column 2: printing that push button start. Then, select "Create New" and give your plan a proper noun using the light-green "Alpha" Key—row two, column 1 and the light-green messages written above the keys.
The —> central is the "STO->" Key (row viii, column 1) directly higher up the "ON" key.
The =, <= and >= keys can be found nether the "Exam" Menu accessible through the "2nd" key (row i, cavalcade 1).
"Prompt" can be found within the "PRGM" menu (PRGM / I/O)
"Disp" can too be plant within the "PRGM" menu (PRGM / I/O)
"Sqrt" refers to the square root push button (2nd primal / row 5, column 1)
1) Quadratic Formula SolverPrompt A
Prompt B
Prompt C
(-B+sqrt(B^2-4AC))/(2A)-->X
(-B-sqrt(B^2-4AC))/(2A)-->Y
Disp X
Disp Y
Pro tip: to include imaginary (nonreal) results, select "Fashion" and alter "Real" to "a+bi".
2) Altitude Formula
Prompt A (ten1)
Prompt B (y1)
Prompt C (xii)
Prompt D (ytwo)
Sqrt((A-C)^2+(B-D)^2)--> E
Disp "Altitude ="
Disp Due east
Stop
3) Area of Triangle Using iii Sides
Disp "Side A"
Input A
Disp "Side B"
Input B
Disp "Side C"
Input C
A+B+C-->10
Ten/2-->D
Sqrt((D)(D-A)(D-B)(D-C))--> East
Disp "Area=?
Disp Eastward
Stop
4) Midpoint Formula
Prompt A (x1)
Prompt B (y1)
Prompt C (x2)
Prompt D (y2)
(A+C)/2--> E
(B+D)/two--> F
Disp "X Midpoint="
Disp E
Disp "Y Midpoint="
Disp F
End
v) Sum of X Consecutive Integers
Disp "Sum of"
Input S
.5S(S+1)-->A
Disp "Sum of 1 to S="
Disp A
Cease
6) Volume and Surface Area of a Sphere
Disp "Radius="
Input R
(4/iii)PiR^iii-->Z
4PiR^4--> Y
Disp "Book="
Disp Z
Disp "Surface Area="
Disp Y
Stop
7) Volume and Surface area of a Cone
Disp "Radius="
Input R
Disp "Height="
Input H
Disp "Slant="
Input S
(1/3)PiR^2H-->V
PiR^2+PiRS--> W
Disp "Volume="
Disp Five
Disp "Surface Area="
Disp W
Finish
8) Converting Betwixt Fahrenheit and Celsius
ClrHome
Menu("FROM","FAHRENHEIT",one,"CELSIUS",2,"KELVIN",3)
Lbl 1
Prompt F
5(F-32)/9→C
C+273.fifteen→K
Goto 4
Lbl two
Prompt C
C+273.15→K
9C/five+32→F
Goto 4
Lbl 3
Prompt K
One thousand-273.xv→C
9C/v+32→F
Lbl four
ClrHome
Disp F,C,K
Output(1,one,"F°")
Output(2,1,"C°")
Output(3,ane,"K")
Stop
9) Standard DeviationThis 1 isn't an actual programme, only information technology works just besides. On the TI-83/84/85 serial, you can calculate standard divergence using the 2nd/LIST/Math Menu, making sure to add together braces around your numbers and commas to carve up them, similar this: stdDev ( {1,ii,3,4,5} = one.58 10) Radical Expression Simplifier
:ClrHome
:Disp "SIMPLIFIES xth root of N" (MATH5)
:Prompt X,Northward
:For(F,iPart(20\/N+.ane),2,-1)
:If fPart(Northward/F^Ten
:End
:Output(5,1,F
:2+iPart(log(F->K
:Output(5,Grand,"*
:Output(5,K+1,X
:K+iPart(log(Ten->K
:Output(5,Yard+2,"x\/
:Output(v,One thousand+4,N/F^X
or
Lbl 3
prgm Clear
Disp "INPUT THE NUMBER"
Dis "UNDER THE"
Input "RADICAL: ",X
iPart(Sqrt (X) + 1 —> A
Lbl ane
If fPart(X/A^2)=0
Then
Goto 2
Else
(A-ane) —> A
Goto 1
Lbl 2
prgmCLEAR
Text (one,1,A, "Sqrt(",X/A^2,")")
Suspension
Menu("FIND ANOTHER","YES",three,"NO",4)
Lbl 4
Stop
Have fun and good luck!
-Brian
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