Texas Instruments TI-73VSC Guidebook - Page 179
Defining Window Values
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Chapter 9: Function Graphing 173 Defining Window Values If you enter a function in the Y= editor and press *, but nothing happens or the graph doesnt look the way you expect it to, you may need to adjust the WINDOW values ('). Depending upon which section of a graph you specify through the WINDOW values, the display on your calculator screen can look very different. In the example below, the first calculator screen uses WINDOW values which include all four quadrants for the function, Y1=X¦cos(X). (Calculator is in Degree mode.) Then, Quadrants I, II, III, and IV are shown separately, so you can see how WINDOW values affect the display. The next section explains how to redefine the values. Y1=X¦cos(X) Ymax=500 Xmin=M500 Ymin=M500 Quadrant II Xmin=M500 Xmax=0 Xscl=90 Ymin=0 Ymax=500 Yscl=75 Quadrant III Xmin=M500 Xmax=0 Xscl=90 Ymin=M500 Ymax=0 Yscl=75 Xmax=500 All Quadrants Xmin=M500 Xmax=500 Xscl=90 Ymin=M500 Ymax=500 Yscl=75 Quadrant I Xmin=0 Xmax=500 Xscl=90 Ymin=0 Ymax=500 Yscl=75 Quadrant IV Xmin=0 Xmax=500 Xscl=90 Ymin=M500 Ymax=0 Yscl=75