a = 0 (slider from -5 to 5, step 0.1)
b = 1 (slider from -5 to 5, step 0.1)
c = 0 (slider from -5 to 5, step 0.1)
sign_{x} = If(b < 0, "", "+")
sign_{1} = If(c < 0, "", "+")
Eingabefeld_a = Textfield(a)
Eingabefeld_b = Textfield(b)
Eingabefeld_c = Textfield(c)
text1: "f(x) = \textcolor{red}{" + (LaTeX[a]) + "}" + (LaTeX[sign_{x}]) + "\textcolor{#004499}{" + (LaTeX[b]) + "}\cos(x)" + (LaTeX[sign_{1}]) + "\textcolor{#007700}{" + (LaTeX[c]) + "}\sin(x)"
g(x) = x + (0 * sqrt(x)) + (0 * sqrt(6.28 - x))
f(x) = a + (b * cos(x)) + (c * sin(x)) + ((0 * sqrt(x)) * sqrt(6.28 - x))