Saurabh Koranglekar
Last Activity: 5 Years ago
We are given the line equation:
y - √3x + 3 = 0
=> y = √3x - 3
And the parabola equation:
y² = x + 2
Step 1: Find Points of Intersection
Substituting y = √3x - 3 into the parabola equation:
(√3x - 3)² = x + 2
Expanding the square,
3x² - 6√3x + 9 = x + 2
Rearranging,
3x² - 6√3x + 9 - x - 2 = 0
=> 3x² - (6√3 + 1)x + 7 = 0
Step 2: Solve for x
The quadratic equation is:
3x² - (6√3 + 1)x + 7 = 0
Using the quadratic formula, x = (-b ± √(b² - 4ac)) / 2a,
where a = 3, b = -(6√3 + 1), and c = 7,
Discriminant:
Δ = b² - 4ac
= (6√3 + 1)² - 4(3)(7)
= (108 + 12√3 + 1) - 84
= 25 + 12√3
Thus, the roots are:
x = [(6√3 + 1) ± √(25 + 12√3)] / 6
Step 3: Find AP * AQ
The required value is given by the relation:
AP * AQ = c/a
= 7 / 3
Thus, the final answer is 7/3.
