a = 1 (slider from -5 to 5, step 0.5)
b = 0 (slider from -5 to 5, step 1)
c = -1 (slider from -5 to 5, step 1)
d = 1 (slider from -5 to 5, step 0.5)
f(x) = abs(a * x^(d) + b) + c