Using The Math Input/Output Mode; Input Operations In The Math Input/Output Mode; Math Input/Output Mode Functions And Symbols - Casio FX-CG20 AU User Manual

4. Using the Math Input/Output Mode

Selecting "Math" for the "Input/Output" mode setting on the Setup screen (page 1-32) turns on
the Math input/output mode, which allows natural input and display of certain functions, just as
they appear in your textbook.
• The operations in this section all are performed in the Math input/output mode. The initial
default setting for this calculator is the Math input/output mode. If you have changed to the
Linear input/output mode, switch back to the Math input/output mode before performing the
operations in this section. See "Using the Setup Screen" (page 1-32) for information about
how to switch modes.
• In the Math input/output mode, all input is insert mode (not overwrite mode) input. Note that
the !D(INS) operation (page 1-7) you use in the Linear input/output mode to switch to
insert mode input performs a completely different function in the Math input/output mode. For
more information, see "Using Values and Expressions as Arguments" (page 1-17).
• Unless specifically stated otherwise, all operations in this section are performed in the
Run-Matrix mode.
k Input Operations in the Math Input/Output Mode
u Math Input/Output Mode Functions and Symbols
The functions and symbols listed below can be used for natural input in the Math input/output
mode. The "Bytes" column shows the number of bytes of memory that are used up by input in
the Math input/output mode.
Function/Symbol
Fraction (Improper)
Mixed Fraction*
Power
Square
Negative Power (Reciprocal)
'
Cube Root
Power Root
x
e
x
10
log(a,b)
Abs (Absolute Value)
First Derivative
Second Derivative
3
Integral*
Σ Calculation*
4
Matrix , Vector
1
Key Operation
v
!v( & )
M
x
!)(
x
–1
)
!x( ')
!(( ')
3
!M( x ')
!I(
e
x
)
!l(10
x
)
(Input from MATH menu*
(Input from MATH menu*
(Input from MATH menu*
(Input from MATH menu*
(Input from MATH menu*
(Input from MATH menu*
(Input from MATH menu*
1-13
Bytes
9
14
4
4
5
6
9
9
6
6
2
) 7
2
) 6
2
) 7
2
) 7
2
) 8
2
) 11
2 5
) 14*