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How to save equation in memory n use it back - Office Equipment & Supplies

How to save equation in memory n use it back relative to ans

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You cannot store permanently formulas. You can enter an equation to solve (In Equation mode). You can use the same equation again with different values but if you exit the EQAtion mode or turn off the calculator it will evaporate.

Posted on Nov 23, 2013

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What is an antonym for equation


There are various ways that a mathematical expression fails to be an equation. It lacks a relational operator (symbol). It has a less than sign, or a greater than sign, or a combination of other symbols. If you language homework requires(?) that you find an antonym for equation, try non-equation.

Oct 03, 2014 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

What does a memory card do


There are two types of "memory cards" related to the Wii. GameCube memory cards are used to store saved games when playing GameCube games in the Wii's compatibility mode. SD cards are used primarily for backing up channels, save games, and WiiWare titles from internal memory. It can also be used for storing images to be viewed in the Photo channel, and for homebrew games (not officially supported).

Feb 24, 2014 | Nintendo Wii Console

1 Answer

Save equation fx 991es


In table Mode you can enter the formula for a function and generate a table of values. For a 991ES Plus you can enter two functions. However if you change MODE everything will be erased.
In EQN (equation) there is a certain number of built in formula types you can choose. You will be asked for the coefficients which will be used to solve the equation selected. However if you change MODE your lose what you entered. So basically you cannot save formulas to use as a memory aid (if that is what your intention is.) Sorry.

Jul 19, 2013 | Casio FX991ES Scientific Calculator

1 Answer

How do I enter (simple step-by-step please) the quadratic equation into this model of calculator?? Thanks.


The TI-30XA does not offer any symbolic algebra or equation solving functions. You will need to do some work on paper. However, its not super difficult.

Solving quadratic equations (finding the roots) involve three steps:
  1. Simplify the equation and bring into the normalized form x² + px + q = 0.
  2. Determine the discriminant D = p² - 4q and check if there are two, one or no solutions at all.
  3. Calculate the root(s), if any.
Lets do (1) with an example, 3x - 2 = ( 6 + x ) / x.
mib8888_37.gif

You should exercise this simplification with different examples until you can do it in your sleep. The goal is to get a form x² + px + q = 0, where in the above example case, p = -1 and q = -2.

Now, use the memory places #0 and #1 to store p and q, as in:

-1 [STO] 0
-2 [STO] 1

Next, you should determine the discriminant D = p² - 4q of the equation using your TI-30XA calculator. Having put the two values into the memory comes in handy here:

[RCL] 0 [x²] [-] 4 [x] [RCL] 1 [=] [STO] 2

Note, we put D into memory place #2, we will need it again later.

Now check the displayed value D:
  • if D
  • if D = 0, there is exactly one solution: -p / 2. Key in [RCL] 0 [+=-] [÷] 2 [=] and the displayed value is the only solution to the quadratic equation.
  • if D > 0, there are exactly two solutions:
    mib8888_39.gif
    Key in [RCL] 0 [+=-] [+] [RCL] 2 [mib8888_40.gif] [=] [÷] 2 [=] to get the first root, and
    [RCL] 0 [+=-] [-] [RCL] 2 [mib8888_41.gif] [=] [÷] 2 [=] for the second root.
In the example, the discriminant turns out to be 9, which is greater than 0, so there are two different roots. Following the key sequences you should get the roots x1 = -1 and x2 = +2. You can double check by calculating
mib8888_42.gif
and you'll receive the original, normalized equation.

As an exercise for your understanding: you can save a few keystrokes by saving -p to memory #0 instead of p. Try to figure out why this helps.

Feb 11, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

I have a student in my Precalculus class who is trying to graph several equations simultaneously, and her calculator will only display the graph of one equation at a time. In the equation editor, the...


Some time or other she played with the Transfrm Application. It remains in memory and takes over the graphing capabilities of the native OS. It must be kicked out of memory.

  1. Press [APPS]
  2. Use Up or Down arrows (Up is faster) to get to the bottom of the APPS list.
  3. Locate [:Transfrm], highlight it and press [ENTER]
  4. In subsequent screen, select the [UNINSTALL] option.
  5. Go back to the [Y=] screen and enter or edit your functions.
  6. Press [GRAPH] when finished entering the functions.

Oct 07, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do you solve equations like 4x+5y=12


You cannot solve this equation,at least not in the regular meaning of solving which is to find the roots. This is a relation linking two variables x and y, in other words a function. There are an infinite number of orderd pairs tha satisfy this equation.
You can draw it as y=1/5(-4x 12) but your calculator cannot graph.
If you want to use the Solve( command on this calculator you must supply the value of y.

Sep 23, 2010 | Casio FX-115ES Scientific Calculator

1 Answer

TI 89 error memory when solving simple functions


Hello,
Simple is a relative complex. What do you mean by solving a function?. Usually you solve equation to find particular values of an unknown, and you draw function to see what it looks like over a range of values.

Take a simple function: y =x. If you draw it with a step of 10^(-6) you will run into memory problems.

I suggest you clear the memory of your calculator and, if you are running a program that misbehaves you should correct the programming errors.

Hope it helps.

Dec 14, 2009 | Texas Instruments TI-89 Calculator

2 Answers

How to name custimized equations


Use the colon

EQUATIONNAME: EQUATION

Oct 28, 2008 | HP 17bII+ Calculator

2 Answers

Solver not working properly


try a simple equation like x^2-1 which should come out with x = 1,-1

no sign change would indicate that the graph of the curve never crosses the x axis, if you graphed the above equation and calculated the zeros, it would come out with -1, 1 which it should, but if you put in x^2+1, the graph would never cross and therefore have no sign change from pos to neg or vice versa, the left-rt are the left and right bounds or the lower and upper bounds which was corrected in later calculators, Please let me know the outcome of graphing both of the above equations and then putting them in the solver. you could also use the quadratic equation to prove the answers if you liked, hope this helps

Mar 13, 2008 | Texas Instruments TI-83 Plus Calculator

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