h(x)=a(x-p)^2+k

a = 4 (slider from -5 to 5, step 0.1)
p = 3 (slider from -10 to 10, step 0.01)
k = -2 (slider from -10 to 10, step 0.01)
h(x) = a * (x - p)^(2) + k
text2: "h(x) = " + (LaTeX[h]) + ""
A = Extremum(h)