a = 0 (slider from -10 to 10, step 0.5)
b = 0 (slider from -1 to 1, step 0.0010)
c = 0 (slider from 0 to 20, step 0.1)
d = 0 (slider from 0 to 30, step 0.1)
f(x) = a * sin(b * (x - c)) + d