HP 35s HP 35s scientific calculator - User Guide - Page 100
Examples of Fraction Displays, Rounding Fractions
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Examples of Fraction Displays The following table shows how the number 2.77 is displayed in the three fraction formats for two /c values. Fraction Format Most Precise Factors of Denominator Fixed Denominator How 2.77 Is Displayed /c = 4095 /c = 16 2 77/100 (2.7700) 2 10/13 (2.7692) 2 1051/1365 (2.7699) 2 3/4 (2.7500) 2 3153/4095 (2.7699) 2 12/16 (2.7500) The following table shows how different numbers are displayed in the three fraction formats for a /c value of 16. Fraction Number Entered and Fraction Displayed Format Most precise Factors of denominator 2 2.5 2 2/3 2.9999 216/25 2 2 1/2 2 2/3 3 2 9/14 2 2 1/2 2 11/16 3 2 5/8 Fixed denominator 2 0/16 2 8/16 2 11/16 For a /c value of 16. 3 0/16 2 10/16 Rounding Fractions If Fraction-display mode is active, the RND function converts the number in the X- register to the closest decimal representation of the fraction. The rounding is done according to the current /c value and the states of flags 8 and 9. The accuracy indicatior turns off if the fraction matches the decimal representation exactly. Otherwise, the accuracy indicatior stays on, (See "Accuracy Indicators" earlier in this chapter.) In an equation or program, the RND function does fractional rounding if Fraction- display mode is active. 5-8 Fractions