How Do I Find the nCr Function on a Casio fx-9750G Calculator?

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Discussion Overview

The discussion centers around finding specific functions on the Casio fx-9750G calculator, particularly the nCr function for calculating binomial probabilities and the process for performing phasor multiplication and division in polar coordinates. Participants share their experiences and seek assistance with these functionalities.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • One participant, Josh, expresses difficulty in locating the nCr function on the Casio fx-9750G calculator for binomial probability calculations.
  • Another participant provides a sequence of button presses to access the nCr function, demonstrating how to calculate combinations using the example of 10C4.
  • Josh acknowledges the help received regarding the nCr function.
  • A different participant, Biz, raises a question about performing phasor multiplication and division, detailing their attempts and the unexpected results they obtained.
  • Biz describes their approach to converting between rectangular and polar coordinates and expresses confusion over the outputs from their calculations.

Areas of Agreement / Disagreement

There is no consensus on the phasor multiplication and division issue, as Biz is still seeking clarification on their calculations. The nCr function issue appears to have been resolved for Josh, but no further discussion on that topic is present.

Contextual Notes

Biz's calculations may depend on specific settings or assumptions about the calculator's functions that have not been fully clarified, leading to unresolved discrepancies in their results.

Who May Find This Useful

Users of the Casio fx-9750G calculator, particularly those interested in combinatorial calculations and phasor operations in polar coordinates.

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Hi,
I don't know if there are any calculator whizzes out there, or maybey just fellow Casio fx-9750G owners, but I hope you can help me with a problem.

I am trying to find the nCr function to calculate binomial probabilities but i can't seem to find the sequence of buttons to get to it.

thanks

josh
 
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I just got a Casio fx-9750GA plus and I'm pretty disappointed with it. I get better functionallity from my fx-115.

Anyways, to do nCr calculations follow these steps, as per the instruction manual section 2-4-5:

to calculate the possible number of different combinations of 4 items that can be selected from 10 items:(which is the formula 10C4)


In the run screen, type: 10 [optn][F6][F3][F3]4[EXE]

It will look like 10C4
 
Brilliant, thanks for your help, it's much appreciated.

Josh
 
Hi all
I have a similar question to this, for my Casio fx-9750G. I'm trying to do phasor (polar co-ordinate) multiplication/division. I've figured out how to convert rectangular to polar co-ordinates, but I can't seem to get sensible results for functions.

Here's what I've tried:

Using "<" to notate the phasor angle, I want to multiply (240<0degrees) x (110<45 degrees)

The answer should be (240 x 110) < (0 + 45 degrees)
= (26400<45 degrees)

[OPTN] [f6] {>} [f5] {ANGL} [f6] {>}
[f1] { pol( } [2400,0) x ] [f1] { pol( } [110,45) ] [EXE]

ans = [28523; 0] ??

Then I thought perhaps the pol( function is converting rectangular to polar, so I tried:

rec(240,0) x rec(110,45)
ans = [18667;0] ??

I've checked my setup angles are in degrees

What am I doing wrong?

Any help or comments, gratefully received

cheers
Biz
 

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