微分方程http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/6404d9df2a9f4a44856472e983bbf07b.png的通解为(         )

差分方程http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/b6ad06bf0a56404ca9c946902483fd5a.png的通解为(&nbsp; &nbsp; &nbsp; &nbsp;)。<br>

差分方程http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/1fd5ff0a702143ee9320461b1230537a.png的通解为(&nbsp; &nbsp; &nbsp; &nbsp;)。<br>

求函数http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/361e09047ee249c2aae41c70ca0a3a65.png的全微分，则&nbsp;http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/ae64679f9fa245faa51cd0921b947081.png（&nbsp;&nbsp;&nbsp;&nbsp;）<br><br>

单击标准工具栏上的（ ）按钮可以打开“设计中心"面板。1、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/7a8ef85e77f8490babf1302f6cfb317f.png &nbsp; &nbsp;&nbsp; 2、 http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/9cb75f8a10154a279078690a7149876e.png &nbsp; &nbsp;&nbsp; 3、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/451fea6688f4480fbf86d1a75006cfdc.png &nbsp; &nbsp;&nbsp; 4、http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/0eeb17dcbe1a455f84981040ae19ef0b.png