3.4.6 The focus of the hyperbola in the question is on the Y axis, and the slope of the asymptote is A/B. From the properties of hyperbola, we can know that the square of C = A+B.

The fourth question, knowing the value of |AB|, can be concluded that the ordinate of a and b is 2 root number 3, which is brought into the parabolic equation.