$\"\"$

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From the figure :

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The center of the ellipse is $\"\"$ , and the major axis is along $\"\"$ -axis.

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Therefore the equation of the ellipse is $\"\"$ , where $\"\"$ .

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From the figure :

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Major axis of the ellipse is $\"\"$ .

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Minor axis of the ellicpse is $\"\"$ .

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Equation of the ellicpse can be obtained by substiuting $\"\"$ and $\"\"$ in the equation of the ellicpse $\"\"$ .

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$\"\"$

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$\"\"$

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The equation of the ellicpse is $\"\"$ .

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The ellipse which is in the form of $\"\"$ , $\"\"$ has foci at $\"\"$ where $\"\"$ . \ \

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$\"\"$

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Therefore foci is $\"\"$ .

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$\"\"$

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The equation of the ellicpse is $\"\"$ and has foci at $\"\"$ .