User guide

If a global maximum or global minimum does not exist for the given function,
an error message will be displayed.
5.4.4 Finding intersection between two graphs
To find the intersection between two graphs we will start with two functions
y1 = 2x + 1 and y2 = x
2
+ 10 as seen in earlier examples. Be sure that
both y1 and y2 are check marked. You may distinguish between the lines by
changing the line style.
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