求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2.求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2,麻烦写下过程
问题描述:
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2.
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2,麻烦写下过程
答
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2.
求极限lim(x,y)→(0,0) [1-cos(xy)]/xy^2,麻烦写下过程