Im trying to replicate a shape in maple but everytime i plot it i get a big red block of line and i don't know why.

g := piecewise(0 <= x and x < 33, -50*x + 33*y, 33 <= x and 38.78 < y, (x - 47.94)^2 + (y - 40.55)^2 - 312.36, 58 <= x and x < 100 and 0 <= y and y <= 38.78, 0.5778*x^2 - 66.08774*x - y + 1887.9165);
implicitplot(g, x = 0 .. 80, y = 0 .. 60, scaling = constrained)

Any help is greatly appreciated

I am trying to plot the following.

it consist of a line and a circle.

if tried doing it as so:

f := x -> piecewise(0 <= x and x <= 1.588125352, (-1)*0.39*x^2 + 1.459*x - y, 1.588125352 <= x and x < 4, (x - 1.81)^2 + (y - 0.42)^2 + (-1)*0.94^2);

implicitplot(f(x), x = 0 .. 3, y = 0 .. 1.5, scaling = constrained);

every time i get this ugly line in the point where the funktion switches and i can't seem to remove it.

I've tried discont = true, but it doesn't seem to work on implicitplots.