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Question

How many of the following statements are correct ___

1. A conic with eccentricity equal to one is called a parabola

2. If ax2+2hxy+by2+2gx+2fy+c=0 represents a parabola, then

abc+2fghaf2bg2ch20 and h2=ab


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Solution

First statement is the definition of parabola. we call the conic with eccentricity equal to one, parabola.

The second statement is related to how to find if a given equation represents a parabola. To find that, we have to find =abc+2fghaf2bg2ch2

If 0 and h2=ab, it represents a parabola.


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