• 2022-06-17
    求下面参数方程的二阶导数.[tex=6.286x3.357]fnpmC2J6JmQBLyo5NmGAz6cqHF9bZzY8lkfXqbN57xgAc1vzW0jEUNBO5+Z0ZCbN4GGY4qMxoeQEAmmgaNBmJ7X6uGwL67ZaR6oIJ8qSf7ww2bmJZ92Vwv+7FWgK/fsW[/tex]