User Manual

Table Of Contents
v
Getting Acquainted — Read This First!
k About this User’s Guide
u Model-specific Function and Screen Differences
This User’s Guide covers multiple different calculator models. Note that some of the functions
described here may not be available on all of the models covered by this User’s Guide. All of
the screen shots in this User’s Guide show the fx-9860GIII screen, and the appearance of
the screens of other models may be slightly different.
u Math natural input and display
Under its initial default settings, the fx-9860GIII or fx-9750GIII is set up to use the “Math
input/output mode”, which enables natural input and display of math expressions. This means
you can input fractions, square roots, differentials, and other expressions just as they are
written. In the “Math input/output mode”, most calculation results also are displayed using
natural display.
You also can select a “Linear input/output mode” if you like, for input and display of
calculation expressions in a single line. The initial default setting of the fx-9860G
III and fx-
9750GIII input/output mode is the Math input/output mode.
The examples shown in this User’s Guide are mainly presented using the Linear input/output
mode. Note the following points if you are using an fx-9860G
III or fx-9750GIII.
For information about switching between the Math input/output mode and Linear input/
output mode, see the explanation of the “Input/Output” mode setting under “Using the Setup
Screen” (page 1-30).
For information about input and display using the Math input/output mode, see “Using the
Math Input/Output Mode” (page 1-12).
u For owners of models not equipped with a Math input/output mode
(fx-7400G
III)...
The fx-7400GIII does not include a Math input/output mode. When performing the
calculations in this manual on the fx-7400GIII, use the linear input mode.
fx-7400GIII owners should ignore all explanations in this manual concerned with the Math
input/output mode.
u !x( ')
The above indicates you should press ! and then x, which will input a ' symbol. All
multiple-key input operations are indicated like this. Key cap markings are shown, followed by
the input character or command in parentheses.
u m EQUA
This indicates you should first press m, use the cursor keys ( f, c, d, e) to select
the EQUA mode, and then press w. Operations you need to perform to enter a mode from
the Main Menu are indicated like this.
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