[alogo] Zoom at a graph-point

The function y = x^2 * sin(1/x) has an interesting behaviour at x=0. With the zoom-tool we can see better what happens at this point.

The point A is movable on the graph. Select the [Select on contour] tool (or press CTRL+2), get the point and move it along the graph. The number object indicates how many times the small rectangle is magnified.

[0_0] [0_1] [0_2]
[1_0] [1_1] [1_2]
[2_0] [2_1] [2_2]
[3_0] [3_1] [3_2]


The red rectangle and its content are magnified 23 times. The magnified objects are displayed in the rectangle on the left. The two other graphs are of the functions y = x^2 (brown) και y = -x^2 (green).

Produced with EucliDraw©