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meme1028 meme1028
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11 years ago
For instance, the formula for finding the focus of a HORIZONTAL parabola is (h + p , k). What is it for a vertical parabola?
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illestbillestb
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11 years ago
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11 years ago
If y= ax^2+bx+c
xF=-b/2a
yF=(4ac-b^2+1)/4a
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