# Mathematics, One variable functions – Sony PEG-TG50 User Manual

## Page 13

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

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

Last

[last]

Logarithm

log(8)

8 [log]

0.90

Natural anti-log or
Exponential

e

2

2 [e

x

]

7.39