High school mathematics: examine parabola focal radius properties typical examples

2022-04-24 0 By

Point eye: this question examines parabola definition and geometric method.Difficulty is parabola radius of focal properties: 1 / + 1 / | | AF | BF | = 2 / p, the radius of the focal bottom and 2 / p is equal to the fixed value.P in this case is half of p in the standard parabolic equation.