Easily create programs in your TI-83 graphing calculator with some internal commands. Use the programs to compute math equations that have multiple steps or to complete complex calculus problems. Access the program quickly to perform the same function repeatedly for efficiency and enter as many programs as your calculator's memory will hold.
Instructions:
1. Choose "prgm" from your menu. This brings you to the program menu. Choose "New" program and hit "Enter."
2. Pick a name for your program and enter it when prompted by the two blinking dots by the cursor. Hit "Enter" and you are ready to create your program.
3. Enter a formula for your calculation. Below are some examples of finance calculations. Simple Interest is calculated as "I=PRT and A=P(1+rt)." Compound Interest is calculated as "A=P(1+i)n." Future Value is calculated as "FV = PMT * ( (1+i)n - 1) / i." Present Value is calculated as "PV = PMT * ( 1- (1+i)-n ) / i."
4. Hit "Enter" to save your program.
5. Navigate to "prgm" and choose your new created program.
6. Select your variables when prompted by your new created program on your TI-83 graphing calculator and watch your program run.
Tips & Warnings
- Pick a name for your program that is close to the name of the equation you are trying to solve. The name can only be eight characters long.
- Use the pre-programmed programs on your TI-83 graphing calculators "prgm" menu.
Thursday, August 8, 2013
Solve Quadratic Equations on a TI-89 Graphing Calculator
Quadratic equations are equations that involve second degree of unknown variables. Many students taking the SAT Reasoning Test or a subject test in mathematics will find that solving simple quadratic equations by hand wastes a lot of time. If you are using a TI-89 Titanium graphing calculator, there is an easy method to reduce the factoring and rationalizing time to a mere seconds.
Instructions:
1. Press the Home button to begin the calculation.
2. Press F2 and then the "Enter" key to select the "solve" command. The solve command solves equations if correct arguments are entered.
3. Input the quadratic equation, including both sides of the equation with only one variable.
4. Input the unknown variable after the quadratic equation. Make sure you place a comma between the equation you entered in step 3 and the unknown variable. For instance, if the equation is x^2+5x-2 = 0, your calculator screen should read "solve(x^2+5x-2=0,x)."
5. Press the "Enter" key and the unknown variable will be displayed on the screen.
Tips & Warnings
If you want an exact value of the answer, press the yellow diamond key and then press the enter key.
Instructions:
1. Press the Home button to begin the calculation.
2. Press F2 and then the "Enter" key to select the "solve" command. The solve command solves equations if correct arguments are entered.
3. Input the quadratic equation, including both sides of the equation with only one variable.
4. Input the unknown variable after the quadratic equation. Make sure you place a comma between the equation you entered in step 3 and the unknown variable. For instance, if the equation is x^2+5x-2 = 0, your calculator screen should read "solve(x^2+5x-2=0,x)."
5. Press the "Enter" key and the unknown variable will be displayed on the screen.
Tips & Warnings
If you want an exact value of the answer, press the yellow diamond key and then press the enter key.
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