题库网
#36a5793d-7722-404b-b2bf-e80d762fc5ac基础fill_compute抛物线直线与圆+圆锥曲线

21.已知抛物线E:x2=2py(p>0)E:x^{2}=2py(p>0)的焦点为FF,过点FF的直线ll与抛物线交于AABB两点,与准线交于CC点,FFACAC的中点,且AF=3\vert AF\vert =3,则p=p=___32\frac{3}{2}___.