Question about Casio FX-9750GPlus Calculator

1 Answer

How do you use the i function. My teacher couldnt find it and we are doing imaginary numbers so i realllly need to know

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.

  • Casio Master
  • 7,993 Answers

Turn calculator ON.
If you see no icons, press [MENU] key.
Use Arrows to focus on RUN and press [EXE]
Press [OPTN]
Among the TABS that appear at the bottom of screen you have CPLX.
Press [F3] to activate it.
The menu TABS that are displayed allow you manipulate complex numbers:
F1 :i imaginary unit i
F2: Abs takes the absolute value of a complex number.
F3:Arg, gives the argument (angle the complex number makes with the positive X-Axis)
F4: Conj calculates the Conjugate of a number.
F5: ReP extracts the Real part
F6:Imp extracts the Imaginary part.

For other operations use the operation keys [Plus] [MINUS] [*][/] [X^2] [Square root]. Be careful using the universal power key or the xroot key as it may lead to a Memory error.

How do you use the - d3dd01c.jpg

Posted on Oct 09, 2010


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

a 6ya expert can help you resolve that 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.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Putting in the imaginary number problems

The 30XIIs doesn't deal with complex numbers directly. You can separate the real and imaginary parts and deal with them separately.

Feb 03, 2014 | Texas Instruments TI-30 XIIS Calculator

1 Answer

How to put in the imaginary numbers on calculator

The 30Xa doesn't work with complex numbers. You'll have to work with the real and imaginary components separately, just like they taught you in class.

Feb 03, 2014 | Texas Instruments TI-30XA Calculator

1 Answer

I can't use an imaginary number in a sigma notation

The summation function only works in the real mode, not the complex mode. You'll find that the same limitation applies to many other functions, such as the integration.

See page E-42 of this manual for the functions that are allowable in complex mode.

Apr 19, 2013 | Casio FX-115ES Scientific Calculator

1 Answer

How to find exponential power of imaginary part in casio calculator

This calculator can do simply algebra with complex numbers-addition, subtractions, multiplications, extract the imaginary and real parts- but not much else. Sorry, calculating exponentials or complex numbers is not within its capabilities.

Aug 03, 2011 | Casio FX-115ES Scientific Calculator

2 Answers

Bibbliography of real numbers

Real Numbers are just numbers like: 1 12.38 -0.8625 3/4 ?2 1998 In fact:

Nearly any number you can think of is a Real Number
Real Numbers include: yes.gif Whole Numbers (like 1,2,3,4, etc) yes.gif Rational Numbers (like 3/4, 0.125, 0.333..., 1.1, etc ) yes.gif Irrational Numbers (like ?, ?3, etc )

Real Numbers can also be positive, negative or zero.
So ... what is NOT a Real Number? no.gif ?-1 (the square root of minus 1) is not a Real Number, it is an Imaginary Number no.gif Infinity is not a Real Number And there are also some special numbers that mathematicians play with that are not Real Numbers
Why are they called "Real" Numbers?

Because they are not Imaginary Numbers.
The Real Numbers did not have a name before Imaginary Numbers were thought of. They got called "Real" because they were not Imaginary. That is the actual answer!
The Real Number Line The Real Number Line is like an actual geometric line.
A point is chosen on the line to be the "origin", points to the right will be positive, and points to the left will be negative.

real-number-line.gif A distance is chosen to be "1", and the whole numbers can then be marked off: {1,2,3,...), and also in the negative direction: {-1,-2,-3, ...}
Any point on the line is a Real Number:

  • The numbers could be rational (like 20/9)
  • or irrational (like ?)
But you won't find Infinity, or an Imaginary Number.
Real does not mean they are in the real world blue-speech.gif They are not called "Real" because they show the value of something real.
In mathematics we like our numbers pure, if we write 0.5 we mean exactly half, but in the real world half may not be exact (try cutting an apple exactly in half).

Jul 10, 2011 | Computers & Internet

1 Answer

When I attempt to use hyperbolic functions for complex numbers i get a domain error

Have you checked the calculator's manual to see if the calculator is able (natively) to handle functions of a complex argument. It is able to handle simple algebra with complex numbers, powers, roots, solving a polynomial equation.
For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

Apr 06, 2011 | Texas Instruments TI-89 Calculator

1 Answer

5th root of i

5 2nd [MATH] F5 MORE F4 ( 0 , 1 ) ENTER

2nd [MATH] brings up the Math menu. F5 goes to the Misc menu, and F4 is the x-th-root function. ( 0 , 1 ) puts in the complex number i: that is a real component of 0 and an imaginary component of 1.

Nov 17, 2010 | Texas Instruments TI-86 Calculator

2 Answers

Using imaginary numbers in a matrix

Press MODE and select one of the two complex modes.

Mar 30, 2009 | Texas Instruments TI-84 Plus Calculator

Not finding what you are looking for?
Casio FX-9750GPlus Calculator Logo

257 people viewed this question

Ask a Question

Usually answered in minutes!

Top Casio Office Equipment & Supplies Experts


Level 3 Expert

7993 Answers


Level 3 Expert

102366 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18402 Answers

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

Answer questions

Manuals & User Guides