E-3
Before getting started...
k
Modes
Before starting a calculation, you must first enter the correct
mode as indicated in the table below.
• The following table shows the modes and required
operations for the fx-570MS and fx-991MS.
fx-570MS and fx-991MS Modes
• Pressing the
F
key more than three times displays
additional setup screens. Setup screens are described
where they are actually used to change the calculator
setup.
• In this manual, the name of the mode you need to enter
in order to perform the calculations being described is
indicated in the main title of each section.
Example:
To perform this type of
Perform this
To enter
calculation:
key operation:
this mode:
Basic arithmetic
F
1
COMP
calculations
Complex number
F
2
CMPLX
calculations
Standard deviation
F
F
1
SD
Regression calculations
F
F
2
REG
Base-
n
calculations
F
F
3
BASE
Solution of equations
F
F
F
1
EQN
Matrix calculations
F
F
F
2
MAT
Vector calculations
F
F
F
3
VCT
CMPLX
Complex Number
Calculations
Note!
• To return the calculation mode and setup to the initial
defaults shown below, press
A
B
2
(Mode)
=
.
Calculation Mode:
COMP
Angle Unit:
Deg
Exponential Display Format:
Norm 1, Eng OFF
Complex Number Display Format:
a
+
b i
Fraction Display Format:
a
b
/
c
Decimal Point Character:
Dot