human
Complete the below
def dsolve(eq, func=None, hint='default', simplify=True, ics=None, xi=None, eta=None, x0=0, n=6, **kwargs):

    ''''Solves any (supported) kind of ordinary differential equation and
    system of ordinary differential equations.
    For single ordinary differential equation
    It is classified under this when number of equation in ``eq`` is one.
    **Usage**
    ``dsolve(eq, f(x), hint)`` -> Solve ordinary differential equation
    ``eq`` for function ``f(x)``, using method ``hint``.
    **Details**
    ``eq`` can be any supported ordinary differential equation (see the
    :py:mod:`~sympy.solvers.ode` docstring for supported methods).
    This can either be an :py:class:`~sympy.core.relational.Equality`,
    or an expression, which is assumed to be equal to ``0``.
    ``f(x)`` is a function of one variable whose derivatives in that
    variable make up the ordinary differential equation ``eq``.  In
    many cases it is not necessary to provide this.
it will be
    autodetected (and an error raised if it couldn\'t be detected).
    ``hint`` is the solving method that you want dsolve to use.  Use
    ``classify_ode(eq, f(x))`` to get all of the possible hints for an
    ODE.  The default hint, ``default``, will use whatever hint is
    returned first by :py:meth:`~sympy.solvers.ode.classify_ode`.  See
    Hints below for more options that you can use for hint.
    ``simplify`` enables simplification by
    :py:meth:`~sympy.solvers.ode.odesimp`.  See its docstring for more
    information.  Turn this off, for example, to disable solving of
    solutions for ``func`` or simplification of arbitrary constants.
    It will still integrate with this hint. Note that the solution may
    contain more arbitrary constants than the order of the ODE with
    this option enabled.
    ``xi`` and ``eta`` are the infinitesimal functions of an ordinary
    differential equation. They are the infinitesimals of the Lie group
    of point transformations for which the differential equation is
    invariant. The user can specify values for the infinitesimals. If
    nothing is specified, ``xi`` and ``eta`` are calculated using
   ...'''
assistant
#Hereever hint is
.
    if iterable(eq):
        match = classify_sysode(eq, func)
        eq = match['eq']
        order = match['order']
        func = match['func']
        t = list(list(eq[0].atoms(Derivative))[0].atoms(Symbol))[0]
        for i in range(len(eq)):
            for func_ in func:
                if isinstance(func_, list):
                    pass
                elif eq[i].coeff(diff(func[i], t, ode_order(eq[i], func[i]))).is_negative:
                    eq[i] = (- eq[i])
        match['eq'] = eq
        if (len(set(order.values())) != 1):
            raise ValueError('It    solves    only    those    systems    of    equations    whose    orders    are    equal')
        match['order'] = list(order.values())[0]
        def recur_len(l):
            return sum(((recur_len(item) if isinstance(item, list) else 1) for item in l))
        if (recur_len(func) != len(eq)):
            raise ValueError('dsolve()    and    classify_sysode()    work    with    number    of    functions    being    equal    to    number    of    equations')
        if (match['type_of_equation'] is None):
            raise NotImplementedError
        else:
            if (match['is_linear'] == True):
                if (match['no_of_equation'] > 3):
                    solvefunc = globals()[('sysode_linear_neq_order%(order)s' % match)]
                else:
                    solvefunc = globals()[('sysode_linear_%(no_of_equation)seq_order%(order)s' % match)]
            else:
                solvefunc = globals()[('sysode_nonlinear_%(no_of_equation)seq_order%(order)s' % match)]
            sols = solvefunc(match)
            if ics:
                constants = (Tuple(*sols).free_symbols - Tuple(*eq).free_symbols)
                solved_constants = solve_ics(sols, func, constants, ics)
                return [sol.subs(solved_constants) for sol in sols]
            return sols
    else:
        given_hint = hint
        hints = _desolve(eq, func=func, hint=hint, simplify=True, xi=xi, eta=eta, type='ode', ics=ics, x0=x0, n=n, **kwargs)
...