二元函数z=1/[ln/(x+y)]的定义域为____.
2024-08-03高等数学(工本)(00023)
二元函数z=1/[ln/(x+y)]的定义域为____.
【正确答案】:ln(x+y)≠0.∴x+y﹥0且x+y≠1
【正确答案】:ln(x+y)≠0.∴x+y﹥0且x+y≠1
