怎么求y=(-3-x)/(x+2)的单调增区间.

问题描述:

怎么求y=(-3-x)/(x+2)的单调增区间.

y=(-(x+2)-1)/(x+2)=-1-1/(x+2)
所以,单调增区间是(-无穷,-2)和(-2,+无穷)