How to Upload Maths Formulas a Graphing Calculator
x Helpful ACT Math Reckoner Programs for the TI Graphing Series of Calculators
Below are some TI-83/84/85 programs that you tin enter into your calculator for the ACT Math Section. Like many of you lot, I apply a TI-83 Plus graphing estimator, so my instructions are customized for that figurer, but they should piece of work fine for the TI-84/85 series too. Remember that the TI-89 is not allowed on the ACT, considering of its CAS (computer algebra system) functionality! It's perfectly OK to utilize programs on your TI-83/84/85, however, considering these calculators lack CAS adequacy*. ACT Figurer Policy*(EDIT 4/6/17): In that location is a little-known dominion buried in the FAQ and Assist section of the ACT website that the program "must not take more than 25 lines of logical text" and "must not telephone call on any other programs." Due to the fact that few test-takers and proctors are aware of this rule, it is unclear whether this restriction will be strictly enforced. Hither is the exact text:
"Q10: Are there whatsoever rules that allowed mathematics-related programs must follow? A: Programs must exist written in the language of the reckoner. Programs written in a dissimilar language, compiled, and loaded onto the figurer are non immune. In this style, the programs can exist examined on the calculator and will utilize calculator functions. Programs must not be lengthy. The limit is 25 logical lines of lawmaking. Programs cannot call some other program. Techniques such as compressing code into a data statement are not allowed every bit a style of getting effectually this limit. Programs are allowed to modify the value of organisation variables so that results may, for case, be graphed through the normal computer graphing interface."
Unfortunately, although at that place is the option of using a TI Connect cable (for the TI-83 series) / micro USB cable (for the TI-84 series and above) and downloading the TI Connect software, this software is buggy / difficult to apply for some, and doesn't work on many operating systems. If you can get the software to piece of work, then you lot can download additional formulas for this software here. If you want to effort it out, then check out this instructional video by Brooke Hanson from SuperTutor Goggle box, who explains every footstep of the procedure. Feel free to give this software a try if you like, but here, I will exist pedagogy you how to enter some of these programs the quondam-fashioned fashion: by hand.
If you lot accept a friend who has programmed these formulas into his/her calculator already, and then you lot can also employ a Link Cable (TI-83) or Mini USB to Mini USB Cable (TI-84 and above) to transfer the programs directly from your friend'south calculator to yours.
In my opinion, the key is quality over quantity. Information technology'due south easy to simply download every programme you tin notice, merely it helps to find a few useful programs and stick with those.
Whatsoever suggestions for additional programs, please let me know at mcelroy@postal service.harvard.edu. If possible, please include the source lawmaking of the program(southward)!
HOW TO ENTER THE FORMULAS INTO YOUR CALCULATOR
Imagine your Texas Instruments calculator buttons as a serial of rows (across) and columns (up and downwardly). This volition help me point yous toward the correct buttons.
The plan "PRGM" button is row 3, column 2: press that button showtime. Then, select "Create New" and requite your program a proper name using the light-green "Alpha" Key—row ii, column i and the green letters written above the keys.
The —> key is the "STO->" Key (row viii, column i) directly above the "ON" central.
The =, <= and >= keys tin be found under the "Test" Card accessible through the "2nd" key (row 1, column 1).
"Prompt" can exist found within the "PRGM" menu (PRGM / I/O)
"Disp" can as well exist found inside the "PRGM" card (PRGM / I/O)
"Sqrt" refers to the square root button (second cardinal / row 5, column i)
i) 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 "Style" and alter "Real" to "a+bi".
2) Altitude Formula
Prompt A (x1)
Prompt B (y1)
Prompt C (10ii)
Prompt D (y2)
Sqrt((A-C)^ii+(B-D)^2)--> E
Disp "Distance ="
Disp E
Stop
3) Area of Triangle Using 3 Sides
Disp "Side A"
Input A
Disp "Side B"
Input B
Disp "Side C"
Input C
A+B+C-->X
X/two-->D
Sqrt((D)(D-A)(D-B)(D-C))--> East
Disp "Surface area=?
Disp E
End
four) Midpoint Formula
Prompt A (xone)
Prompt B (y1)
Prompt C (x2)
Prompt D (y2)
(A+C)/2--> E
(B+D)/2--> F
Disp "X Midpoint="
Disp Due east
Disp "Y Midpoint="
Disp F
Stop
5) Sum of X Consecutive Integers
Disp "Sum of"
Input S
.5S(South+ane)-->A
Disp "Sum of 1 to Southward="
Disp A
Stop
6) Book and Surface area of a Sphere
Disp "Radius="
Input R
(4/3)PiR^3-->Z
4PiR^iv--> Y
Disp "Volume="
Disp Z
Disp "Surface area="
Disp Y
Stop
7) Book and Area of a Cone
Disp "Radius="
Input R
Disp "Height="
Input H
Disp "Slant="
Input South
(1/3)PiR^2H-->5
PiR^2+PiRS--> Due west
Disp "Volume="
Disp V
Disp "Surface Area="
Disp Due west
Stop
8) Converting Between Fahrenheit and Celsius
ClrHome
Carte("FROM","FAHRENHEIT",one,"CELSIUS",two,"KELVIN",iii)
Lbl 1
Prompt F
v(F-32)/9→C
C+273.15→K
Goto 4
Lbl 2
Prompt C
C+273.xv→Thousand
9C/five+32→F
Goto iv
Lbl 3
Prompt One thousand
K-273.fifteen→C
9C/v+32→F
Lbl iv
ClrHome
Disp F,C,K
Output(1,1,"F°")
Output(2,one,"C°")
Output(3,1,"Yard")
Stop
9) Standard DeviationThis one isn't an actual program, but it works just as well. On the TI-83/84/85 series, you can calculate standard departure using the 2nd/LIST/Math Carte du jour, making sure to add together braces around your numbers and commas to dissever them, like this: stdDev ( {1,2,3,4,5} = 1.58 10) Radical Expression Simplifier
:ClrHome
:Disp "SIMPLIFIES xth root of N" (MATH5)
:Prompt 10,N
:For(F,iPart(Twenty\/N+.ane),2,-1)
:If fPart(North/F^10
:End
:Output(5,1,F
:2+iPart(log(F->K
:Output(5,K,"*
:Output(5,G+1,Ten
:G+iPart(log(X->K
:Output(5,Yard+ii,"10\/
:Output(5,Chiliad+4,North/F^X
or
Lbl 3
prgm CLEAR
Disp "INPUT THE NUMBER"
Dis "Nether THE"
Input "RADICAL: ",X
iPart(Sqrt (X) + one —> A
Lbl 1
If fPart(X/A^two)=0
Then
Goto 2
Else
(A-1) —> A
Goto 1
Lbl 2
prgmCLEAR
Text (1,one,A, "Sqrt(",X/A^2,")")
Suspension
Menu("FIND ANOTHER","Aye",iii,"NO",4)
Lbl four
Stop
Have fun and practiced luck!
-Brian
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Source: https://mcelroytutoring.com/blog-post.php?id=4332
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