f(x) = x^(3) / 5 + 1 / (x^(4) - x + 1)
k = 0 (slider from -10 to 10, step 0.1)
g(x) = f(x) + k
λ = 1 (slider from -5 to 5, step 0.1)
h(x) = λ * f(x)
p(x) = -f(x)
q(x) = f(x + k)