1-13
  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  Key Operation   Bytes 
 Fraction (Improper) 
v
 9 
 Mixed Fraction* 
1  
!v( & ) 
 14 
 Power 
M
 4 
 Square 
x
 4 
 Negative Power (Reciprocal) 
!)( 
x  
 –1 
) 
 5 
'
!x( ') 
 6 
 Cube Root 
!(( 
3  
') 
 9 
 Power Root 
!M( 
x  
') 
 9 
  e 
x  
!I( e  
x 
) 
 6 
 10 
x  
!l(10 
x 
) 
 6 
 log(a,b)  (Input from MATH menu* 
2 
)  7 
 Abs (Absolute Value)   (Input from MATH menu* 
2 
)  6 
 First Derivative   (Input from MATH menu* 
2 
)  7 
 Second Derivative   (Input from MATH menu* 
2 
)  7 
 Integral* 
3  
 (Input from MATH menu* 
2 
)  8 
  Σ   Calculation* 
4  
 (Input from MATH menu* 
2 
)  11 
 Matrix  (Input from MATH menu* 
2 
)  14* 
5