f(x) = ℯ^(x)
P = Point(f)
VY = Point(yAxis)
h: y = y(VY)
VX = Point(xAxis)
gl1: x = x(VX)
U2 = NaN
O2 = NaN
L = 1 (slider from -5 to 5, step 0.1)
R = 1 (slider from -5 to 5, step 0.1)