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The coordinates of foci are (0 , -2) and (0, 2)

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Length of the major axis 2a = 8

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a = 8/2 = 4

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a² = 4² = 16

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Centre is mid point of foci

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Centre = ( Average of x-coordinates of foci ,  Average of y-coordinates of foci  )

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Centre = ( (0+0)/2 , (-2+2/2) )

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Centre (h , k) = ( 0 , 0 )

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c = Distance from centre to foci

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c = √[ (0-0)² + (0+2)² ]

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c = √4 = 2

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c² = a² - b²

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b² = a² - c²

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b² = 4² - 2² = 16 - 4

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b² = 12

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Th general form of  ellipse  : (x-h)²/a² + (y-k)²/b = 1

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(x-0)²/16 + (y-0)²/12= 1

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(x²/16) + (y²/12) = 1

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