Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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I can't sellect more than one reduced equation.

I try to sellect more than one equation on the "Y=", but it doesn't let me. What should I do?

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  • b5b6b7b Feb 14, 2009

    ohh forget it, I already found the solution.

  • b5b6b7b Feb 14, 2009

    I just uninstalled the Transfrm application.

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I simply uninstalled the transform app.

Posted on Mar 27, 2009

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I want to solve an complex equation on casio fx-570 ES Plus


Your scientific calculator is unable to solve complex equation with complex coefficients. You should try to solve by hand directly using the quadratic formula or by factoring the polynomial in z
failing that, another way would be to set z=x+iy, substitute this for z, carry out the algebra and try to separate real and imaginary parts. But your two equations will constitute a system of two quadratic equations. I am not aware of any general method to solve coupled nonlinear equations.
Good luck.

Dec 20, 2012 | Casio FX-115ES Scientific Calculator

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I am trying to answer a question that doesn't have x. i am trying to find x and y intercepts when the equation is y-4=0


Given y-4=0, it's easy to see that the y intercept is 4. There is no x intercept.

Nov 29, 2011 | Calculators

1 Answer

When attempting to solve graphing equations GETTING graphing error says INVALID DIM


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

If this doesn't do it, please reply to this post and give a sample equation that causes this error.

Sep 09, 2011 | Texas Instruments TI-83 Plus Calculator

2 Answers

My calculator casio fx-350ES doesn't have equation.why? or this calculator doesn't have software equation.why?


Not all calculators have that. The Fx115ES and the FX991 ES have a lot more options thatn the FX300Es and FX350ES. I believe you only have COMP (general computational mode), Table and STAT.
Why? It was not designed that way.

Aug 18, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

Simple equation, device is froze, curser is blinking but device wont shut off or clear screen. Removed batteries device powers off, replaced batteries, same equation remains on screen when powered back on....


try taking out the triple A batteries and leaving the calculator to sit with them out for a minute or so, replace them and check if it's fixed. If that doesn't work you can do the same, but take out the small button back up battery as well. If you're still not having luck you should call ti cares (800-842-2737) they're usually helpful.

Aug 08, 2011 | Texas Instruments TI-85 Calculator

1 Answer

How to do equations the papers that come with it doesn't explain it very well. Is there someplace where I can get a better explaination?


You can solve equations two ways: The EQN computational mode or the SOLVE application.
IN the EQN mode you can solve linear equations in one, two and three unknowns; the quadratic equation; and the cubic equation.
Enter the EQN mode by following the instructions on the following screen capture. Press 5:EQN
6_25_2011_1_06_32_pm.jpg
You have three types of equations.
6_25_2011_1_08_15_pm.jpg
Once you select the type of equations, a template is displayed where you enter the relevant coefficients.

6_25_2011_1_10_10_pm.jpg
Under each label (a, b, etc. ) enter a coefficient and press ENTER to move to the next. With a cubic equation, or a linear equation in 3 unknowns, you have to use the Right arrow to display the cells where you enter the value of d.
After you input all necessary coefficients press the = sign to get the solution.

To use the SOLVE feature, see the screen capture that follows. It comes from the Casio manual.



6_25_2011_1_17_45_pm.jpg

6_25_2011_1_19_53_pm.jpg
Good luck

Jun 24, 2011 | Casio FX-115ES Scientific Calculator

2 Answers

How to solve rational equations on my casio fx 115es calculator?


Hello,
You must first eliminate the denominators by reducing the different expressions to the same denominators. Use the distributivity property of multiplication to expand your terms. Gather similar monomials. Do all the cleaning to reduce your equation to one of the 2 types that the calculator can handle.[Mode][5:EQN] [3: ax2+bx+c] or [4:ax3+bx2+cx+d]

Remember :Any solution that makes one of the original denominators equal 0 must be rejected.

Hope it helps.

Jun 15, 2009 | Casio FX-115ES Scientific Calculator

2 Answers

Steps in solving matrix on my ti 89 calculator.


I assume you are speaking of solving a system of equations with a number of unknowns. If not, please correct me. Here's an example in practice:

If you have a system of 3 equations with 3 unknowns, you would set up your matrix so that the coefficients of each variable for a particular equation are on one row. So, given equations x + y + z = 0, 2x + 3y - 4z = 1, x + -z = -1 you would type the following into your calculator: [[1,1,1,0][2,3,-4,1][1,0,-1,-1]] and press enter to make sure you typed it correctly. notice that in the third row there is a zero, since we have zero time y for the third equation. Then row-reduce the matrix (2nd > 5 > 4 > 4 or in the CATALOG as rref). You should get out the matrix [[1,0,0,-1][0,1,0,1][0,0,1,0]]. This says that x=-1 y = 1 z=0 since my first column contained the coefficients for the x variable, the second for the y variable, and the third for the z variable. The last column contains the solution, the part on the other side of the equals sign.

Hope this helps! For more reading (from someone else; I just made this one up), check out the Wikipedia articles on Gaussian elimination and Systems of linear equations

May 03, 2009 | Texas Instruments TI-84 Plus Calculator

2 Answers

I need to know how to get to reduced row echelon form


i tried to graph a simple function but it wont show the lines it will only show the graph

Mar 17, 2009 | Casio FX-9750GPlus Calculator

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