tion.  If a large
        value, never rescale.  If < 0, rescale is set to 1.3.
    finite_diff_rel_step : None or array_like, optional
        If `jac in ['2-point', '3-point', 'cs']` the relative step size to
        use for numerical approximation of the jacobian. The absolute step
        size is computed as ``h = rel_step * sign(x) * max(1, abs(x))``,
        possibly adjusted to fit into the bounds. For ``method='3-point'``
        the sign of `h` is ignored. If None (default) then step is selected
        automatically.
    maxfun : int
        Maximum number of function evaluations. If None, `maxfun` is
        set to max(100, 10*len(x0)). Defaults to None.
    N)