• 2021-06-20
    若闭区域D是由抛物线http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/c2cce6ef434d42d1846dd63f086bd9c2.png及直线http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/71edcde95b7b408bb8275833b1187e4f.png所围成的闭区域,则http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/14ac0a7fff9c4ba1ad9a342140b961cf.png(     )
  • 举一反三