a = 1 (slider from -5 to 5, step 0.1)
b = 0 (slider from -5 to 5, step 0.1)
c = 0 (slider from -5 to 5, step 0.1)
f(x) = a x^(2) + b x + c
T1: "f(x) = " + a + "x^2 +" + b + "x +" + c