a = 1 (slider from 0 to 5, step 0.1)
b = 1 (slider from 0 to 5, step 0.1)
f(x) = cos(x)
d(x) = x^(1 / 3)
e(x) = x
h(x) = a * sin(b * x)
g(x) = a * sin(b * x) + e(x)