Question

second ques
answer only if u know
no irrelevant ans or it will be reported

Answer 1

f(x) = x/x-1
So, that means
x - 1 = 0 so that the whole function becomes not defined.
So, that means the value of x cannot be 1 because then the value of function will become not defined.
x belongs to R ( real numbers )

So, the range of the given function

Range = R - {1}