In Maple I have defined a function
If I plot within $Q \in [0,100]$ I get
but I get the exact same plot with other boundaries
and if I use $Q \in [0, 10^{-10}]$ I get
How can this happen? What am I doing wrong? I think the last plot is edged because the steps on the y axis is so small that it cannot draw the line as curved as it should be. But I have no idea why the same function can draw the same linear curve ending in different values of $Q$.