CBSE Class 11-science Answered
Find the equation of the parabola with focus (0,4) and directix y = -4.
The focus lies on the y axis, so it is an upward or a downwoard parabola directix is y = -4. Hence it is an upward parabola x2 = 4ay.
Where a = 4 Equation of the parabola is x2 = 4 4 y = 16y.
x2 = 16y.