a = 1 (slider from -5 to 5, step 0.1)
d = 0 (slider from -5 to 5, step 0.1)
e = 0 (slider from -5 to 5, step 0.1)
f(x) = (a * (x - d)^(2)) + e
Text1: "f(x)=a(x-d)^2+e= 
       " + (LaTeX[a]) + "(x-" + LaTeX[d] + ")^2+" + LaTeX[e] + ""