the length of a focal chord of the parabola y^2 =4ax at a dis†an ce b from the vertex is c. Then 1. a^2=bc 2. a^3=b^2c 3. b^2=ac 3. b^2c=4a^{}

the length of a focal chord of the parabola y^2 =4ax at a dis†an ce

1.	the length of a focal chord of the parabola y^2 =4ax at a dis†an ce b from the vertex is c. Then 1. a^2=bc 2. a^3=b^2c 3. b^2=ac 3. b^2c=4a^{}
Answer» the length of a focal chord of the parabola y^2 =4ax at a dis†an ce b from the vertex is c. Then 1. a^2=bc 2. a^3=b^2c 3. b^2=ac 3. b^2c=4a^{}