from scipy.interpolate import interp1d

# tulledatasett:
x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
y = [2.0, 0.44, -0.85, -0.16, 0.98, 0.35, -0.91, -0.47, 0.84, 0.60, -0.76]