Auswirkung von a in

f(x)=a \cdot 2^x

f(x) = 2^x

a = -2.5 (slider from -5 to 8, step 0.5)
f(x) = (a * 2^(x))
A = Intersect(f, yAxis, (0, -2.5))
B = Intersect(xAxis, yAxis)
a_2 = Segment(A, B)
text1: "f(x) = " + f
g(x) = 2^(x)
C = Intersect(g, yAxis, (0, 1))
D = Point(g)
E: (1, f(1))