设函数<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/99ce077de58846b588fbad00a37c9611.png?x-oss-process=image/sharpen,200"/>是由方程组<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/87c02a04adab424ab7ad95a1705b7fff.png?x-oss-process=image/sharpen,200"/>（<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/977050b7842a4a08bfce3315fd7e431e.png?x-oss-process=image/sharpen,200"/>为参量）所定义的函数，求<img src="http://jgxm-question.oss-cn-beijing.aliyuncs.com/psst/files/d2defba9b52c46e5b6b0535793a58342.png?x-oss-process=image/sharpen,200"/>