Question about HP 19bII Calculator

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Solve Equations Hello, I have looked every where and I can not find Solve Equations to use with my 19B II Business Consultant II HP Calculator. Do you know where I can find them? Thank you. RJ

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Hi this will help: http://h10025.www1.hp.com/ewfrf/wc/useCategory?lc=en&cc=us&dlc=en&product=59017&lang=en& good luck

Posted on Apr 09, 2006

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Seeking HP 19B II battery door


HP doesn't sell spare parts for these calculators any more. If the door is the only part you need and the parts of the case opening that hold the door in place are still good, you could make a replacement door.
See the thread about making a battery door for an HP 28S (which uses the same case design as the 19BII).
Broken HP 28S battery cover repaired with brass sheet

Sep 24, 2014 | HP 19Bii Business Consultant Calculator

1 Answer

Hello How to solve complex equations using casio fx 9860G AU For example (2+i)A+B=6 2A+(1+i)B=1 How to solve A and B using this calculator


The simultaneous equation solver requires the coefficients to be real. Similarly matrices must have real coefficients.
Your only alternative is to express each of A and B as a real part and imaginary part.
A= x1+iy1
B=x2+iy2.
Substitute x1+iy1 for A in the two equations. Substitute x2+iy2 for B in the two equations. Do the algebra. Gather real parts and gather imaginary parts. Split each original equation into two equations: One equation comes from setting Real Part of left side = real part of right side (1); the other equations comes from setting the imaginary part of left side= imaginary part of right side (here 0).

Do the same procedure for the 2nd original equation.
At the end of the process you will have 4 coupled linear equations in the 4 unknowns (x1,y1,x2,y2).

Then you might want to use the calculator to solve the derived system. Once you have x1,y1,x2,y2 you reconstruct A=x1+iy1, etc.

Aug 29, 2011 | Casio FX-9860G Graphic Calculator

1 Answer

Can you insert like letters and solve algebraic equations?


Not with that calculator. You can use Wolfram Alpha to solve most equations very quickly: http://www.wolframalpha.com/input/?i=x^2+-+3x+-+4+%3D+0

You can even use it to solve systems of equations: http://www.wolframalpha.com/input/?i=2x+%2B+3y+%3D+5%2C+4x+-+3y+%3D+1

Enjoy.

Mar 03, 2011 | Texas Instruments TI30X IIB Scientific...

1 Answer

I need straightforward key strokes for a casio fx115 es graphing calculator to solve linear equations. I have the Manuel but it only confuses me. this is an example of what I'm solving ...


This calculator doesn't really support a solver like that. You can use Woflram Alpha to solve equations like that really quickly. Example
There are more expensive calculators that will solve these types of equations, but I would recommend just using Wolfram Alpha whenever you need a solution to a math problem.

Mar 02, 2011 | Casio FX-115ES Scientific Calculator

1 Answer

On the TI-84 Calculator I can't find the = symbol. Not the enter key to find the answer to a simple equations. But if I were to use the Solve(...) option in the Catalog I can't because I can not find the =...


Hello,
Since you know about the catalog, that is where you find the equal sign, near the bottom of the list. It is faster if you scroll up from abs(.
Hope it helps.

Oct 07, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

Want to solve quadratic equations on my casio 3650p super fx


Hello,
In your manual, Appendix Program Library, (Page A1) you have the listing of the problem to solve the quadratic equation. Type it in your calculator and execute it.

422b55e.jpg
Hope it helps.

Aug 13, 2009 | Casio FX-9750GPlus Calculator

1 Answer

Doesn't operate as fast as it used to!


Hello,
Put fresh batteries (main batteries)
Clear the RAM of junk variables and programs that clutter it" [2nd][MEM][F1][1:All memory]

Brush up on you calculator skills: shortcuts, command syntax for the commands you want to use; and start again. It might seem faster.
And no (The myth of the Paradise Lost has been with humanity since the beginings of time) if calculator has grown old there is not much you can do about it.

Hope it helps.

Dec 03, 2008 | Texas Instruments TI-89 Calculator

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