Let f and g be decreasingfunctions for all real numbers. prove
that f o g isincreasing.

Answer with Step-by-step explanation:

We are given that two functions f and g are decreasing function for all real numbers .

We have to prove that fog is increasing.

Increasing Function: If

Then,

Decreasing function: if

Then,

Suppose

fog(x)=f(g(x))=f(-2x)=-(-2x)=2x

Therefore, f and g are decreasing function for all real numbers  then fog is  increasing.

Hence, proved

seems like d

step-by-step explanation:

step-by-step explanation: