# 20 Most Recent Casio CFX-9850G Plus Calculator Questions & Answers

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] Casio CFX-9850G... | Answered on Jul 04, 2015

Evaluate it by pressing
5 . 8 * SHIFT ln ( . 5 6 * 4 ) =

You don't need to enter "e". Just use the e^x function (the shifted function of the ln key).

Casio CFX-9850G... | Answered on Apr 06, 2012

Press STAT
Press F5:Distr
Press F5:BINM
Press F1:Bpd
In subsequent screen configure the list, number of trials, etc.
When finished configuring, highlight execute and press EXE

Casio CFX-9850G... | Answered on Mar 28, 2012

Here are the capabilities of the calculator.         Casio CFX-9850G... | Answered on May 25, 2011

In Run screen, enter the number whose factorial you want to calculate ( number can be at most equal to 69), press [OPTN][F6] to get to next page of menus.

For factorials
• Press then [F3](PROB) then [F1] (x!) followed by [EXE].
For combinations
• Press then [F3](PROB) then[F3][nCr][EXE]
For permutations
• Press then [F3](PROB) then[F2][nPr][EXE]

Casio CFX-9850G... | Answered on Apr 22, 2011

On the Fx-82 look on to the pads as it is seen as the On/OFF written on the pad or the body . so look carefully on the pads. Touch the pad to switch on/off.

Casio CFX-9850G... | Answered on Mar 31, 2011 Graph the function over the domain [-Pi,+Pi]
Then press the [SHIFT][MENU] (SETUP) and in option [Dual Screen] select [G to T] Graph to table. The screen will be spilt in two, but the Table part remains empty.
Press [SHIFT][F1] (TRACE), the cross hair appears on screen.
Move it around on the curve
If you press [EXE] at a cross hair location, the table records the X and Y value. On the following screen capture, the exponential function is graphed along with sin(X) and the table is populated by selected values of the exponential. Now rate all the solutions I provided for you

Casio CFX-9850G... | Answered on Feb 18, 2011

Feb 26, 2010 - I was right to suggest to you to read the page on domain and range of functions: it would have clarified the concepts to you.
The domain of the sine function is from -infinity to + infinity. But since the function is periodic, with a period equal to 2Pi, by limiting the DOMAIN of values to -1*Pi to +1*PI you see all there is to see. All the rest can be obtained by translation of the curve.

The RANGE of the sine function is LIMITED to values in the interval [-1, 1]
Let us summarize: The DOMAIN of the sine function is ]-infinity, +infinity[ and its RANGE is [-1,+1].
That being said, there is something I would like to point to you
These are the numbers.

You want a "square", so be it. Here is the window setting
and the corresponding picture. Does it look like a square?  Why do you insitst on drawing a square? Horizontally you have the angle ( a number with a unit), while vertically you have a ratio of two lengths ( a pure number). Would even think about a square if you drew your sine function with the degree as angle unit. Horizontally you would have a domain [-180 degrees, 180 degrees] while vertically you have a range [-3.14..., +3.14...]. How can that be a square?

I showed you how you can fix every dimension in the graph window (see the first picture) . Choose any values that you believe will give you a square graph. And I do mean to say "that make you believe", because there is no meaning attached to the "fact" that the window looks like a square. An angle cannot be compared to a the projection of one side of a right triangle onto the hypotenuse.

Casio CFX-9850G... | Answered on Feb 06, 2011

The secant is the inverse of the cosine. Calculate sec(x) as 1/cos(x).

Casio CFX-9850G... | Answered on Nov 19, 2010

You can reset the calculator. There is a button on the back.
You can also Press ZOOM and select standard STD or auto.
If you want to enter windows dimensions manually, make sure Xmin is less than Xmax, and Ymin is less than Ymax.

Casio CFX-9850G... | Answered on Oct 10, 2010

First of all you have a key marked [a b/c]. It is in the first column of keys, below the [X,theta, T] key and above the 7 digit key. Its second (shifted) function is [d/c] These two keys are used to enter mixed numbers and improper fractions. The command is also accessed from the menus.

1. In Run screen press [OPTN]
2. Press [F6] to move to next page of menus.
3. Press [F4:NUM]
4. Among the menu Tabs at the bottom of screen there is the Frac Menu.
5. Press [F3:Frac] to access it.

Casio CFX-9850G... | Answered on Oct 05, 2010

All right, I will show you how to draw a simple function such as y=5*X 2. The method is the same reagrdless of the complexity of the function.

1. Turn calculator ON. If you do not see several icons press [MENU].
2. Use arrow to select the [GRAPH] application and press [EXE].
3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [ ] 2
6. Press [EXE] to store function.
7. If you want to draw other functions, it is time to do so on that screen.
8. When done, press [F6:Draw].
9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
10. You can also press [SHIFT][V-Window] to set the window limits.

Casio CFX-9850G... | Answered on Sep 23, 2010

In Run Mode Press [SHIFT][[VARS] to access (PGRM)
The ? is entered by pressing [F4]
To get : press [F6][[F5]

In Program edit mode, you access them the same way as above.

Casio CFX-9850G... | Answered on Sep 10, 2010

This shows you how to enter your data and calculate some statistical values. Keep in mind that the variance is the square of the standard deviation.

In the main menu select [STAT] icon to enter Stat mode and display the statistical data lists. Use the statistical data lists to input data and perform statistical calculations. Use the arrows to move the highlighting around the lists.
Example: Enter the following values in List 1
1st line enter 90 [EXE]
2nd line 85 [EXE]
3 79 [EXE]
4 75 [EXE]
5 70 [EXE]
6 68 [EXE]
7 56 [EXE]

When finished you press [F2:Calc], then [F1:1Var] and the statistical results appear on screen.

Title of screen : 1-Variable
x bar =74.7142857
Capital Sigma x= 523
Capita Sigma X squared = 39851
x lower case sigma n = 10.5249945
x lower case sigma n-1= 11.3682934
n = 7
Scroll down with Down arrow to access other data
minX =56
Q1=68
Med =75
Q3=85
Xbar -x lower case sigma n =64.1892911
x bar x lower case sigma n = 85.2392802
maxX=90
Mod=90

All you have to do now, is to look at the theory you learned and interpret what these values mean.

Casio CFX-9850G... | Answered on Sep 06, 2010

You can use the hardware resetting procedure. There is a button on the back of calculator that you can press using a straightened paper clip.

Casio CFX-9850G... | Answered on Jul 31, 2010

One simple way to define the domain to be graphed is to set the limits of the domain as the Xmin and Xmax dimensions of the window.

Casio CFX-9850G... | Answered on Jul 25, 2010

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