Question about Casio CFX-9850G Plus Calculator

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Convert a polar equation to a rectangular equation?

For example, I would like to convert 2+3i into polar form, and back again. I know that with some calculators you can do this, but I haven't been able to find any information for the Casio CFX-9850GB. Thanks!

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  • Casio Master
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To convert a complex number (not an equation) from rectangular coordinates to polar coordinates you do as follows
2+3[OPTN][ F3 (CLPX)][F1(i)][F6 >][F3> r ,theta][EXE]

Convert a polar equation to a rectangular equation - 25274414-flt5fn1xcbfhzhbjwumza10b-1-0.jpg

Posted on Jul 04, 2015

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Posted on Jan 02, 2017

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SOURCE: casio cfx-9850gb plus calculators's graph messed up

Press the RESET button on the back of the calculator. Use a starightened paper clip.

Posted on Jun 23, 2010

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SOURCE: i am a casio fx-82MS user. i would like to know

Hello,
Press [MODE] and select [1:COMP]
Press [SHIFT][MODE] and select [3:Deg]. You can also use rad if the angle you are given is in radians.
To start the conversion
Press [SHIFT][-] (Rec) screen displays Rec(
Key in the radius r , ex: 3 screen displays Rec(3
Press [SHIFT][)] (,) to enter comma separator Rec(3,
Key in the angle in degrees, ex: 57.3; screen displays Rec(3,57.3
Press ) to close parentheses; screen displays Rec(3, 57.3)
Press [=]
Screen displays
Rec(3, 57.3)
X=1.620720961
Y=2.524532346

X and Y are the values of the coordinates.

If angle is in radians, [SHIFT] [MODE][4:Rad] the command
Rec(3, Pi) gives X=-3, Y=0

I just realized that your question pertains to the FX82MS but is listed under the FX115ES (That is quite a difference) So my answer above does not concern you but I will leave it as is should anyone need the answer for the FX115ES.

Look at the enclosed screen capture for the FX82MS
k24674_1.jpg

Posted on Nov 16, 2010

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I need to find how to insert polar phasor to convert to rectangular complex...


See captured image below. These examples are computed for angles measurement in radians and degrees in two dimensions


need-find-insert-polar-phasor-convert-oet104ecykkzoj0lhsetu24j-3-0.jpg

Jan 29, 2016 | Texas Instruments TI-Nspire CX CAS...

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How to covert from polar to Rectangular


Let use an example to convert from polar to rectangular. There may be other ways to do it on this particular calculator, but this should work on all calculators.

Let's use 20 degrees and 5 units for our polar.

Sin 20 degrees = y/5, cross multiplying we get y = 5 sin 20 degrees.

Similarly, Cos 20 degrees = x/5. Cross multiplying we get x = 5 cos 20 degrees.

Thus, I get (1.71, 4.70) as the rectangular coordinates of the point.

Good luck.

Paul

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Complex matrix


Is it complex or matrix? You can have only one mode at a time.What kind of equations? The solve function uses real-valued equations.
Complex numbers: You can add, subtract, multiply and divide. You can convert a number from rectangular to polar forms and vice-versa; you can calculate the absolute value of a complex number, or a conjugate.
All the operations are done in the Mode CMPLX.

Feb 04, 2014 | Casio FX991MS Scientific Calculator

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I need to convert the rectngular form to polar form , so how can i do that ?


In Run screen, Press OPTN, Press F6> repeatedly until you see the ANGL TAB. Press F6> again (once or twice). You will see the TAB Pol( and Rec(
To convert from Rectangular coordinates to Polar press POL(, type in the x and y coordinates then EXE
Example: F1: Pol(1,1) gives (1.314213562, 45)
F2: Rec(square root (2), 45) gives (1,1)
Make sure the angle unit is set to the one you need (degree or radian).

Apr 19, 2012 | Casio Algebra FX 2.0 Calculator

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Convert from polar to rectangular & vise versa using calculator with RCL&POL GIVE EXAMPLE JUST PROCEDURE THANKS 9


Examples #036 and #037 in the Appendix illustrate how to convert between polar and rectangular coordinates. If you need the appendix and/or the manual, you can download them from
http://support.casio.com/manualfile.php?rgn=1&cid=004001004

May 22, 2011 | Casio FX-115ES Scientific Calculator

2 Answers

How do I convert between the rectangular and polar form of a number with imaginary values? i.e. I want to take the number a+bi and convert it to polar D<(angle) and vice versa.


Use the >Rec and >Pol commands. They're in the Complex number menu, accessible through 2nd [CPLX] MORE.

[CPLX] is the shifted function of the 9 key.

Dec 10, 2010 | Texas Instruments TI-86 Calculator

1 Answer

Converting between Forms When working with phasors it is often necessary to convert between rectangular and polar form. To convert from rectangular form to polar form: M = sqrt{A^2 + B^2} f =...


You can switch the display mode for complex numbers by pressing SHIFT MODE down 3 and picking one. This will display the current result in the selected mode.

You can also override the current display mode and specify the format. Add these keystrokes at the end of a calculation: SHIFT 2 then 3 for polar or 4 for rectangular.

Nov 24, 2010 | Casio FX-115ES Scientific Calculator

4 Answers

How can i enter a polar form number with angle to convert into a rect form


how can i enter a polar form number with angle to convert into a complex numbe(a+bi)

Apr 28, 2010 | Casio Algebra FX 2.0 Calculator

1 Answer

Polar/rectangular


For a TI-86


Converting rectangular to polar
Press "2ND" and then "MORE" for the MODE screen
Highlight PolarC and press "ENTER"
Quit that screen.
Now ready to go.
A example of converting 5+j6
Enter "(5,6)" in the calculator and press "ENTER"
Should get (7.81024967591*angle*50.1944289077)


Converting polar to rectangular
Press "2ND" and then "MORE" for the MODE screen
Highlight RectC and press "ENTER"
Quit that screen.
Now ready to go.
A example of converting 5*angle*35
Enter "(5*angle*35)
Should get (4.09576022145,2.86788218176)


Note
*angle* is the symbol when you press "2ND" then ","


Note 2
To round the an decimal places press "2ND" then "MORE" for the MODE screen and on the line that says float, choose a number on that line for the number of decimal places you would like to have.

More can be found at
http://docs.google.com/gview?a=v&q=cache:nAC57BtC6IIJ:myweb.wit.edu/khabaria/ELEC195_files/ti86cplx.pdf+ti-86+convert+to+polar&hl=en&gl=us

Dec 02, 2008 | Texas Instruments TI-86 Calculator

1 Answer

Hello - i have a casiofx250 calculator and i urgently need to convert from rectanular to polar - how do i do this ? raj


This is an example, plug in your problem.
Convert 12 - 42j to polar form (r ∠ q).
For CASIO calculator...
Keystrokes Display 12 12 rp.gif 12 42 42 plum.gif -42 eq.gif 43.68065934 (= r) xy.gif -74.0546041 (= θ) Therefore,
Complex number in rectangular form: 12 - 42j Same complex number in polar form: 43.7 ∠ -74°

Feb 29, 2008 | Computers & Internet

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