y=log3(1-x)+1/(x-1)的单调减区间是.y=log3为底(1-x)+1/(x-1)的单调减区间是.

Question

y=log3(1-x)+1/(x-1)的单调减区间是 .
y=log3为底(1-x)+1/(x-1)的单调减区间是 .

Answer 1

定义域1-x>0 =>x