Sony PEG-NZ90 powerOne Personal v2.0 Operating Instructions - Page 13

Mathematics, One Variable Functions

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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 Comments C/CE 8 8 √x 2.83 Tap twice to clear the display The following are examples of one-variable math functions: Operation Example Keystroke Answer Last Logarithm log(8) Natural anti-log or e2 Exponential [last] Recalls the last calculated answer 8 [log] 0.90 2 [ex] 7.39 10 Infinity Softworks

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Performing Arithmetic
10
Infinity Softworks
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
Comments
C/CE
Tap twice to clear the display
8
8
√
x
2.83
The following are examples of one-variable math functions:
Operation
Example
Keystroke
Answer
Last
[last]
Recalls the last calculated answer
Logarithm
log(8)
8 [log]
0.90
Natural anti-log or
Exponential
e
2
2 [e
x
]
7.39