Sony PEG-SJ33 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