User Manual

TI-83 Plus Function Graphing 145

ZoomRcl

graphs the selected functions in a user-defined viewing window.

The user-defined viewing window is determined by the values stored

with the

ZoomSto

instruction. The window variables are updated with the

user-defined values, and the graph is plotted.

ZOOM FACTORS

The zoom factors,

XFact

and

YFact

, are positive numbers (not

necessarily integers) greater than or equal to 1. They define the

magnification or reduction factor used to

Zoom In

Zoom Out

around a

point.

Checking XFact and YFact

To display the

ZOOM FACTORS

screen, where you can review the current

values for

XFact

and

YFact

, select

4:SetFactors

from the

ZOOM MEMORY

menu. The values shown are the defaults.