Algebra2 Math Helper v2.0

by Jonah Cohen        <ComAsYuAre@aol.com>
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thanks for using Algebra2!!!


history of Algebra2:

i wrote this program over the school year while taking Algebra 2 (hence the name)
whenever we encountered a new formula or process of interpreting data, i simply added it in (when i should've been working on homework). anyway, some of this stuff (particularly the quad menu) is also useful in Algebra 1 and Geometry, but not everything will be used. since i began this program on a TI-85, everything should work on one. just copy all the code from Graph-Link 86 to Graph-Link 85 and send it to the calc. 

after assembling all these different functions together into one program, i got a spiffy program called ase on my ti-86.  since its (and other shells') display is a lot nicer than mine (i admit it), i dismantled Algebra2 and grouped it into smaller, easier to use, programs.  most of them still have their original names, but some don't and some are still in a menu.  you'll figure it out.  
i also added a program called delete, which simply deletes a bunch of variables and is called to in all of the programs (except pascal, which i actually designed to be a standalone program and released separately as well). don't delete delete! (feel free to quote me on that).  i replaced the pascal which is in Algebra2 with a nicer looking one because this one (the nice one) doesn't work too well in large programs, but works fine by itself

use whichever format works best for you. the only thing to keep in mind is that Algebra2 leaves all the variables behind, and the group of small programs doesn't.  if you want, open delete and copy its contents to the end of Algebra2.

this time, the group file has actually been tested!!


next is an explanation of each option in Algebra2.  


this program is organized into menus:

the main menu:

|TIME|SEQU|POLY|MISC|EXIT|

the TIME menu:

|THROW|COMP|MORT|    |EXIT|

the SEQU menu:

|ARITH|GEOM|SUM|INFIN|EXIT|

the POLY menu:

|QUAD|MUL|DIV|PASCA|EXIT|

the MISC menu:

|DIST|COST|CIRCLE|    |EXIT|

the EXIT menu:

exit the program, duh!


in the TIME menu:

1)throw

throw will calculate the time it takes for an object thrown to land (velocity can be negative), and also calculates how far horizontally it travels

2)comp

comp will calculate the balance in a bank account
if you want to do continuous compounding, enter 0 for the times compounded per year option

3)mort

mort will calculate the monthly payment of a mortgage

4)exit

back to main menu


in the SEQU menu:

1)arith

arith will calculate a certain term in an arithmetic sequence

2)geom

geom will calculate a certain term in a geometric sequence

3)sum

sum prompts for an expression (use x as variable) and asks for beginning and ending variables. it outputs the sum of the sequence (hence the name)

4)infin

infin calculates the sum of an infinite series with 0<ratio<1

5)exit

back to main menu


in the POLY menu:

1)quad

quad will do a bunch of things after it prompts for a, b, and c of a quadratic equation

in the QUAD menu:

|x=|VERT|FACT|GRAPH|EXIT|

|x=| calculates the x intercepts of a parabola

|VERT| calculates the vertex plus some other nifty

|FACT| is an altered version of a program i manually copied off the internet.  i promise to give credit to whoever wrote this if they'd be so kind as to tell me.

|GRAPH| graphs the current quadratic

|EXIT| returns to POLY menu

2)mul

mul is another program i copied off the internet.  again, i'll give credit as soon as i know who wrote it.  i do remember that it was originally called pmul.
by the way, it multiplies polynomials which you enter the values for in a list

ex: 3x^3-8x+4     enter: {3,0,-8,4}

the 0 if for x^2, which exists even though its value is 0

3)div

div is just like mul, except it divides.  enter the same way.  originally called pdiv

4)pasca

pasca will display any line of pascal's triangle you wish, but if it gets too big you better have a book handy!!

5)exit

back to main menu


in the MISC menu:

1)dist

dist calculates the distance between two points on a graph (distance formula)

2)cost

cost calculates the cost per item while distributing the overhead

3)circle

circle calculates the radius and the formula for a circle with center at the origin and a particular intercept coordinate

5)exit

back to main menu




if you choose to modify this, please send me a copy and explain how the program is improved.