In this paper,we prove that the supremum sup{∫B∫B|u(y)|^p(|y|)|u(x)|^p(|x|)/|x-y|^u dxdy:u∈H0^1,rad(B),‖▽u‖L^2(B)=......

当学生求知欲强烈时，感官系统也会处于一种极度亢奋的饥饿状态，必然会产生迫切的学习欲望，“欲”有了，就会想方设法去“渔”，自然会有“......