HP 33s hp 33s_user's manual_English_E_HDPM20PIE56.pdf - Page 90
Fractions in Equations
UPC - 082916001456
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In an equation or program, the RND function does fractional rounding if Fraction-display mode is active. Example: Suppose you have a 56 3/4-inch space that you want to divide into six equal sections. How wide is each section, assuming you can conveniently measure 1/16-inch increments? What's the cumulative roundoff error? Keys: Display: Description: 16 | 56 3 4 I D 6q {J 6z L D | y {} 8 { + + S Sets up fraction format for 1/16-inch increments. (Flags 8 and 9 should be the same as for the previous example.) Stores the distance in D. The sections are a bit wider than 9 7/16 inches. Rounds the width to this value. Width of six sections. The cumulative round off error. Clears flag 8. Turns off Fraction-display mode. Fractions in Equations When you're typing an equation, you can't type a number as a fraction. When an equation is displayed, all numeric values are shown as decimal values - Fraction-display mode is ignored. When you're evaluating an equation and you're prompted for variable values, you may enter fractions - values are displayed using the current display format. See chapter 6 for information about working with equations. 5-8 Fractions