Question

@TuringTest

Answer 1

I feel like everything just changed..

Answer 2

it didn't, just try out each choice in the same way you did the last problem

Answer 3

this is hell of confusing.. math is crap.

Answer 4

lol i think this problem is wrong, actually

Answer 5

the idea is, try the first one:\[(f\circ g)(x)=[g(x)]^2=\left(\frac1x\right)^2=\frac1{x^2}\neq x\]

Answer 6

so that's wrong...
then try the next one in the same way with the other functions
and so on until you fnd one that gives x... though i only found one that gave -x....
so I think the test is mistaken, which certainly does happen

Answer 7

oh no, the answer is there; i was being lazy
yeah, just continue trying each one in the way i did the first, and the way you did the last problem