How to find range from the graph using MAPLE?

Question

I want to find the range of h for n=1, n=2 and n=3 using Maple from this graph. But I do not know how to find it. Can someone help me?

Answer 1

The graph data structure will have several CURVES structures, one for each curve. Each typically has as its first entry a Matrix whose rows are the data points. Thus if P is the plot,

indets(P, Matrix);

will give you a set of three matrices. The first column gives the $x$ values, the second the $y$ values, for the points of the curve. Caution: if a view option was used in the plot command, not all points in the Matrix will be shown.