Mathematics - Sony PEG-NZ90 Read This First Operating Instructions Manual

Performing Arithmetic
The Backspace ( ) button allows for editing of numbers as they are
entered. Tapping this button removes the last digit entered (i.e., 54.32
becomes 54.3).
Tapping the Clear Entry/Clear (CE/C) button once clears only the
currently entered number. Tapping it a second time clears the entire
computation.

Mathematics

Math functions are either one or two variable. Two-variable math,
such as add, subtract, multiply and divide, take two variables to
compute. One-variable functions, such as square root and reciprocal
(1/x), need only one variable to calculate. Many math functions are
visible on the screen. Others can be accessed via the "func" function
button.
One Variable Functions
Multiple one-variable math functions are supported, including square
root, x-squared, and reciprocal. These functions use only the value in
the main view window. For example, to calculate the square root of 8:
Key Display
C/CE
8 8
2.83
x
The following are examples of one-variable math functions:
Operation
Last
Logarithm
Natural anti-log or
Exponential
10
Comments
Tap twice to clear the display
Example Keystroke
[last]
Recalls the last calculated answer
log(8) 8 [log]
2
e 2 [e
x
]
Answer
0.90
7.39
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