Ex 1: Conic Section: Parabola with Vertical Axis and Vertex NOT at the Origin (Up)

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This video provides an example of how to find the vertex, focus, directrix, axis, and the endpoint of the latus rectum (focal diameter) when the vertex is NOT at the origin. This example opens up.
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I may know the answer, but I'm asking anyway. How do we know that this is the equation of a parabola?

sifrael
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very informative:) hopefully i can get an acceptable score for the math quiz on the next day

thowletzonend
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I didn't thought parabolas could be that simple! 😂
Filipinos are better mathematicians that the Indians! we'll have conic sections next year in 5th grade! I'm in 4th grade, actually.

mr.arachnook
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thank you so much for this!! thogh i expected to see more examples

maxima