TI-DOWNLOADS

The programs below are for the TI-83 graphing calculator from Texas Instruments. The GUESLINE program was originally created by George Egbert and later modified by Dr. Michael Lloyd, Henderson State University. The POLYSOLV programs were written by Dr. Michael Lloyd.

Using GraphLink software from Texas Instruments, you can download a program from your computer to your graphing calculator. In the list below, click on 'DOWNLOAD' to save the program on your computer. If this is the first time you are downloading a TI calculator program, or if you do not have GraphLink software, you can find help on the instructions page located on the Texas Instruments Web Site.

The textbook chapter or section to which a program applies is noted.

General ADEF:

Download This program returns the calculator to its default settings for graphing.

General	AZOOMDEC:
Download	This program sets a friendly window centered at (0,0) with horizontal and vertical increments of 0.2.

General	FRIENDLY:
Download	This program sets a friendly window centered at any point with horizontal and vertical increments of 0.1.

General FORMULAS:

Download List of all formulas in Pre-calculus listed by topic.

Section P.2 FORMULA:

Download Distance formula program. Allows user to find distance between two points and find the coordinate of one of the points given the distance..

Section P.2	LINES:
Section P.4	This program takes two points as input and returns slope, intercepts, distance, and midpoint as outputs.
Download

Section P.4	GUESLINE:
Section 2.1	This program lets the user find the slopes and y-intercepts of line that are randomly generated.
Download

Section 1.4	LININV:
Download	This program graphs a linear function and its inverse in the same viewing window.

Section 2.1	QUADFORM:
Download	Changes quadratic equations from standard form to vertex form and vice-versa. Also gives the discriminant, roots and graphs the function.

Section 2.1	PARABOLA:
Download	For a quadratic function, this program provides all intercepts, the vertex, a graph, and a table of values.

Section P.5 Section 2.1	QUADFORM:
Download	This program uses the quadratic formula to give real or complex solutions of a quadratic equation.

Section 2.4-2.6	POLYSOLV:
Download	This program solves polynomial equations..

Section 3.4	LOG:
Download	This program uses the change-of-base formula to give logs to base other than e and 10.

Section 4.1	DEGTORAD:
Download	This program converts angle measures from degrees to radians.

Section 4.1	RADTODEG:
Download	This program converts angle measures from radians to degrees.

Section 4.3	UNITCIRC:
Download	This program displays the unit circle values for all four quadrants.

Section 5.5	LAWSIN:
Download	This program uses the Law of Sines to solve the ASA problem.

Section 5.6	LCOSSAS:
Download	This program uses the Law of Cosines to solve the SAS problem.

Section 7.1	SYSTWO:
Download	This program solves a system of two linear equations in two variables if the solution is unique.

Section 7.3	SYSTHREE:
Download	This program solves a system of three linear equations in three variables if the solution is unique.

Section 7.3	SYSFOUR:
Download	This program solves a system of four linear equations in four variables if the solution is unique.

Section 9.4	FIB:
Download	This program finds the nth term of the Fibonacci sequence 1, 1, 2, 3, 5, 8, . . . .

Section 9.4	GEOSUM:
Download	This program finds the sum of an infinite geometric series if the absolute value of the common ratio is less than 1.