This returns a rational approximation of a value. It is similar to the ▶Frac command of TI-84, but can be put anywhere in a line, not just the end.

If allowance is not provided, the allowance is treated as if 5E-14 was entered


:Disp .33333333333333333333
:Disp approxRational(.33333333333333333)

This will print .33333... then 1/3 if the mode is Auto or Exact. If the mode is approx, it will display .33333... twice.

See AlsoEdit

  • ▶Frac - displays a number in fractional form. TI-84 only.
  • exact( - creates a temporary mode of finding exact values instead of approximate values. TI-89 only.

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