Therefore, l = 3x/43/4x (0
(2) (Point P and Point A are on opposite sides of the straight line EF) means that P is below EF. Because the triangle PEF is a right-angled triangle PEF, EF is the hypotenuse. If the line from point P is perpendicular to EF and the focus is H, then the PH value is higher than PEF. Cutting PH=2/ 1EF
When point P is within BCEF, it is. y = XX/4 1/2x & lt; =(3-L) L=3x/4.0