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Texas Instruments ti 84 plus graphing calculator Manual

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Appendix B: Reference Information 656
Accuracy Information
Accuracy InformationAccuracy Information
Accuracy Information
Computational Accuracy
Computational AccuracyComputational Accuracy
Computational Accuracy
To maximize accuracy, the TI-84 Plus carries more digits internally than it displays.
Values are stored in memory using up to 14 digits with a two-digit exponent.
• You can store a value in the window variables using up to 10 digits (12 for
Xscl, Yscl,
Tstep, and qstep).
• Displayed values are rounded as specified by the mode setting with a maximum of
10 digits and a two-digit exponent.
•
RegEQ displays up to 14 digits in Float mode. Using a fixed-decimal setting other
than
Float causes RegEQ results to be rounded and stored with the specified number
of decimal places.
Xmin is the center of the leftmost pixel, Xmax is the center of the next-to-the-rightmost
pixel. (The rightmost pixel is reserved for the busy indicator.) @
X is the distance between
the centers of two adjacent pixels.
•In
Full screen mode, @X is calculated as (Xmax N Xmin) à 94. In G-T split-screen
mode, @
X is calculated as (Xmax N Xmin) à 46.
• If you enter a value for @
X from the home screen or a program in Full screen mode,
Xmax is calculated as Xmin + @X É… 94. In G-T split-screen mode, Xmax is calculated
as
Xmin + @X É… 46.
Ymin is the center of the next-to-the-bottom pixel; Ymax is the center of the top pixel. @Y
is the distance between the centers of two adjacent pixels.
… 659 …


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