a = 0 (slider from -5 to 5, step 0.1)
f(x) = sin(2 x)
n = 5 (slider from 0 to 10, step 1)
ε = 0.04 (slider from 0 to 0.1, step 0.01)
g = TaylorSeries(f, a, n)
g_1(x) = g(x) - ε
g_2(x) = g(x) + ε
k = 1.06 (slider from 0 to 2, step 0.01)
b: x = a + k
c: x = a - k