def taylor(fx, xs, order, x_range=(0, 1), n=200):
    x0, x1 = x_range
    x = np.linspace(float(x0), float(x1), n)

    fy = sy.lambdify(xs, fx, modules=['numpy'])(x)
    tx = fx.series(xs, n=order).removeO()

    if tx.is_Number:
        ty = np.zeros_like(x)
        ty.fill(float(tx))
    else:
        ty = sy.lambdify(xs, tx, modules=['numpy'])(x)

    return x, fy, ty