It still gives me an incorrect answer. In the calculator I am trying to solve: 1.0*10 -14power / 3.3 *10 -12 power. The answer it gives me is 3.03 *10 to the -27 power. That is an incorrect answer. The answer is 3.03 *10 to the -3 power. That answer would be completely incorrect on the exam. I dont understand what the problem is?

how about trying solve the issue, by starting backwards, since you know the price, the constant, payment,
or it is not possible to do the figures
either the N or i is wrong PMT could also be incorrect.
i was trying give you some ideas
try changing N or i by 1 digit see what happens.

They're both giving you the same number.
1.953125E-03 means 1.953125 * 10^-3, which is 0.001953125 .

You apparently have your calculator set to display no digits to the right of the decimal point. 5/2 is 2.5, which rounds to 3, and 50/100 is 0.5, which rounds to 1.

To change the display setting, press MODE, highlight the desired settings on the first two lines, then press ENTER followed by 2ND QUIT. Try setting "NORMAL" and "FLOAT" and see what results you get now.

You have your calculator set to give your answer in scientific notation. If you would like it to give your answer in decimal form you need to change the settings. On my calculator which is an older version, you just press [mode] three times. On your screen you will see fix sci and norm as well as the numerals 1, 2 and 3. press [3] on your key pad. You should see norm 1~2? then press [2] on your keypad and this will have changed your settings back to plain decimals.
I hope this helps!
Ashley

Using a pencil or pen, push the indented 'reset' button on the back of the calculator.

207920 is the correct result for one month at 12%, compounded monthly. 187500 is the result for one year at 12%, compounded annually. Set P/Y to 1 and try again.

Hi,
I have no way of knowing why it is giving you wrong answers. If you have an idea what the answer might be, you should use this knowledge to help the calculator find your solution, either by giving a better guess (initial value) or by restricting the domain of values, instead of -1e99 and 1E99.

It is also possible that you may have set up the problem incorrectly. For this reason I am describing how to use the Solver and the solve( command.

You have two ways to solve an equation with the TI84Plus

1. The solve( command the syntax of which is solve( expr, var,guess, {lower_limit, upper_limit}). Here expr is the expression (without =0), var is the variable you solve for, guess is you estimate of the solution, lower_limit and upper_limit are the bounds of the domain where you are looking for a solution. Of course your guess must be between theses limits.
2. The Interactive Solver.

The solve( command

• The solve command is accessed through the catalog of commands [2nd][0] (CATALOG).
  
• Press [LN] (S) to let the cursor jump to the first command that starts with s.
  
• Scroll down to reach the solve( command.
  
• Select it and press [ENTER]. The command echoes on main screen.
  
• Enter the different arguments: expr, var, guess, etc.
  
• Close the right parenthesis and press [ENTER].
  
• Wait for the solution to be displayed.

The interactive Solver

Press [MATH][0:Solver]. You see what is on the first picture (I entered K-0.5*V^2). Press [ENTER]. You see what is on the right picture.


In the interactive solver you enter a value for all the parameters, constants, for all, save the entity you are solving for, here V. So you must clear the 0 to the right of the = sign after the V. when finished you press [ALPHA][ENTER] (SOLVE).
Here is what I get for the small exemple I chose.


Left -rt=0 shows that the root was found to within the calculator's tolerance.

Hope it helps.
Thank you for using FixYa.

Hi,
Press [SHIFT][MODE][5:Fix] and enter a number between 1 to 9. If you enter 2, your results will have 2 decimal digits.

Hope it helps.

Hello,
Use the Clear All button to get rid of the junk, then retry.
Hope it helps.

Hello,
Try resetting calculator to default configuration.
[2nd][MEM][7:Reset][2:Defaults][2:reset]. Then [CLEAR] screen.
Hope it solves your problem.