f(x)=a\sqrt{b(x-h)}+k

a = 0.6 (slider from -20 to 20, step 0.1)
b = -1.8 (slider from -20 to 20, step 0.1)
h = 7.4 (slider from -20 to 20, step 0.1)
k = 2.2 (slider from -20 to 20, step 0.1)
f(x) = (a * sqrt((b * (x - h)))) + k
texte1 = LaTeX(f, true, true)
A: (h, k)