Question

设函数f(x)=(x-a)/(x-1),集合M={x,f(x)小于0},P={x...

设函数f(x)=(x-a)/(x-1),集合M={x,f(x)小于0},P={x,f(x)的导数大等于0},若M包含于P,则

Answer 1

设函数f(x)=(x-a)/(x-1),
集合M={x|f(x)小于0}=(a,1)(a1时)或∅(a=1时)
P={x|f(x)的导数大等于0}={x|(a-1)/(x-1)^2>0}={x|x1,x为实数}(a>1时)或∅(a=1