Texas Instruments NS/CLM/1L1/B User Guide - Page 95
Finding points of interest: zeroes, minima, maxima, Zeroes: z Coordinates
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3. Type the rest of the inequality expression. Press· to graph it. The expression, as typed, displays next to the graph. Shading is always present on the graphs of inequalities to show the values that satisfy the inequality. If you graph two inequalities that overlap, the area of overlap is shaded darker than either of the individual inequality graphs. Finding points of interest: zeroes, minima, maxima When you create a graph, you can use the Point On tool ( ) (press b 6 2) to locate the zeros, minima, and maxima if these are applicable for objects on the work area. (They may not display if their location on the graph not visible on your screen.) Both local and global points of interest display. Note: Global points of interest display only when they are also local. For example, inverse sine reaches its (global) maximum at x=1, but the tooltip 'M' does not display there since it is not a local maximum. To find them, just move the point along the object or graphed line, and when you are near a point of interest, the coordinates display along with one of the following identifiers: • Zeroes: z ( Coordinates ) • Minimum: m ( Coordinates ) • Maximum: M ( Coordinates ) Using Graphs & Geometry 87