Functions, EXT1′ F1 2018 HSC 4 MC Which graph best represents the curve `y = 1/sqrt(x^2 - 4)`? A. B. C. D. Show Answers Only `=>\ text(C)` Show Worked Solution `text(S)text(ince)\ \ sqrt(x^2 – 4) > 0` `=> y > 0\ \ (text(Eliminate B and D))` `text(As)\ x -> 2^+, sqrt(x^2 – 4) -> 0, y -> ∞` `text(As)\ x -> -2^-, sqrt(x^2 – 4) -> 0, y -> ∞` `=>\ text(C)`
