Parabola
General
Grade 11
Question:
The length of a focal chord of the parabola y<span class="math-inline">^2</span> = 4ax at a distance b from the vertex is, then
2a^2 = bc
a^3 = b^2c
ac = b^2
b^2c = 4a^3
Step-by-Step Solution
Key Concept: General
CR = a + b
Correct Answer: a + b