I need to find the quotient function of the following:

Given that f(x)=x^2-3 and g(x)=2x+1 find each of the following if it exists:

a. (f/g)(-root3)

b. (g/f)(-1/2)

This is the fourth time I have seen this question posted, each time by a different screen name. See my answer to "Rachale"