Question about Texas Instruments TI-84 Plus Calculator

1 Answer

My solver is giving me the wrong answers - Texas Instruments TI-84 Plus Calculator

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Texas Instru... Master
  • 8,080 Answers

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.

my solver is giving me the wrong answers - 5a3aa82.jpge9ed008.jpg
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 exemmy solver is giving me the wrong answers - 7b60093.jpg.

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

Hope it helps.
Thank you for using FixYa.

Posted on Dec 10, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What is invlfcenss unscrambled

the boggle solver website does not even give an answer for this.

Feb 18, 2015 | Computers & Internet

2 Answers

What is the answer to todays jumble

the link above will unscramble letters and make words that can be used to figure out "THE DAILY JUMBLE"

Jan 07, 2015 | Games

1 Answer

What do you do here and why do you do it

Where is here?
If you have any questions about Algebra or other topics, feel free to ask them. Someone will try to answers them. And it will not cost you a farthing, or a kopeck, or a shekel. Just give the necessary information that makes your questions answerable.
Why am I doing it? Because it feels good to help others, even if they don't always say thank you.

Feb 13, 2014 | SoftMath Algebrator - Algebra Homework...

1 Answer

Find a word with these letters dlycat

Aha, in Anagram Solver

the answer is 'dactyl', which means
-a finger or toe
-a particular style in poetry
-a mythical alchemist being

Aug 28, 2013 | Computers & Internet

2 Answers

Need to know the steps on how to solve this equation: 1*4200*(45-q)=1.5*2400*(q-20) solve for q. Ans ~33, but need detailed workings. Thanks

Your answer is wrong anyway. (This should be clear since if you put in q=-33, one side will be positive and the other side negative.) This is just simple distributing and rearranging:

1*4200*(45-q) = 1.5*2400*(q-20)

1*4200*45 - 1*4200*q = 1.5*2400*q - 1.5*2400*20

189000 - 4200q = 3600q - 72000

189000+72000 = 3600q + 4200q

261000 = 7800q

q = 261000/7800

The answer is 33.4615 give or take a few places.

Mar 08, 2010 | SoftMath Algebrator - Algebra Homework...

2 Answers

How do u put this in polynomial standard form x^7-x+x^3-x^5+x^10

Sorry, blue, but you're wrong. Standard form means the exponents are arranged in decreasing order. So this one is
(Sorry, but you lose out on the 4 thumbs.)

Mar 03, 2010 | SoftMath Algebrator - Algebra Homework...

2 Answers

It's not a sewing machine it's a small kitchen appliance - am I typing the wrong thing?


Please tell us in detail the nature of the problem or provide the model no. so that we can provide the appropriate answer.

For now as the details are not clear, you are typing the wrong thing.

Jan 09, 2010 | Sewing Machines

1 Answer

Solver mode in equations part of calculator

Your Solver is a numerical solver not a symbolic one. You have to supply an initial guess at a solution and the Solver finds it. If you suspect, or know, that there are others jut run the solver again supplying the initial guess for each additional solution.
One easy way to locate the roots of an equation is to draw the function (without =0) and see on the graph the approximate values of x where the function vanishes. These approximate values of the roots can be used as initial guesses in the Solver.

Nov 20, 2008 | Casio FX-9750GPlus Calculator

Not finding what you are looking for?
Texas Instruments TI-84 Plus Calculator Logo

827 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Office Equipment & Supplies Experts


Level 3 Expert

8080 Answers

Stevan Milanovic

Level 2 Expert

267 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Texas Instruments Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides