Operations of monotonous function (tricks)

on
Note,
* I - increasing
*D- decreasing


  • For fog(x)- :- if both are increasing (or D) => I. In rest case D.
  • For f+g & f.g :- if both same then same as that. In rest case can't decide.
  • For f-g & f/g :- if both different then it depends on f.


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