f(x)=a[ \frac{1}{b(x-h)}  ] +k

a = 4.8 (slider from -20 to 20, step 0.1)
b = 10.6 (slider from -20 to 20, step 0.1)
h = 5.8 (slider from -20 to 20, step 0.1)
k = 3.6 (slider from -20 to 20, step 0.1)
f(x) = (a * 1 / ((b * (x - h)))) + k
texte1 = LaTeX(f, true, true)
g: x = h
i: y = k
texte3: "asymptote: x=" + h + ""
texte4: "asymptote: y=" + k + ""