Question

find minimum and maximum coordinates of screen

Answer 1

To determine the maximum Y coordinate, find the Y coordinate in your domain that is furthest north. Determine the minimum and maximum Z coordinates. The minimum Z coordinate is the greatest of the depth coordinates and the maximum Z coordinate is the greatest of the height coordinates.

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Answer 2

In general, the maximum value is found in a similar manner by pressing fMax to select fMax from the MATH/MATH menu.

Graphing the function as well as follow these steps:  

in order to find the minimum(s), press F5 (G-Solve), then F3 (MIN).  

Of course it will locate the minimum starting at the left most, even show the point and coordinates on the screen.