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amselah735
17.01.2020 •
Mathematics
Find the standard form of the equation of the parabola with a focus at (0, 2) and a directrix at y = -2.
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Ответ:
The standard form of the equation of the parabola with a focus at (0, 2) and a directrix at y = -2 is
.
Step-by-step explanation:
The standard form of the parabola is
The general form of the parabola is
Where, (h,k) is vertex, (h,k+p) is focus and y=k-p is directrix.
It is given that the parabola with a focus at (0, 2) and a directrix at y = -2. It means
On solving (2) and (3), we get
Substitute h=0, k=0 and p=2 in equation (1).
Divide both sides by 8.
Therefore the standard form of the equation of the parabola with a focus at (0, 2) and a directrix at y = -2 is
.
Ответ: