Fractions In Equations - HP 33s User Manual

In an equation or program, the RND function does fractional rounding if
Fraction–display mode is active.
Example:
Suppose you have a 56
sections. How wide is each section, assuming you can conveniently measure
1
–inch increments ? What's the cumulative roundoff error ?
/
16
Keys:
º Ê
16
Ë Ë e
56 3 4
¯
6
¹ f
¸
6
h Ã
D
º ·
{  } 8
¹ É

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
3
/ –inch space that you want to divide into six equal
4
Display:

D
 
  
 
 
 
 

Description:
Sets up fraction format for
1
/ –inch increments. (Flags 8
16
and 9 should be the same as for
the previous example.)
Stores the distance in D.
The sections are a bit wider than
7
9 / inches.
16
Rounds the width to this value.
Width of six sections.
The cumulative round off error.
Clears flag 8.
Turns off Fraction–display mode.