$\"\"$

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The ellipse equation is $\"\"$ .

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(a)

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The parametric equations of $\"\"$ are $\"\"$ and $\"\"$ .

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$\"\"$ and $\"\"$ on $\"\"$ .

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$\"\"$

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(b)

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Graph the parametric equations $\"\"$ and $\"\"$ , when $\"\"$ and $\"\"$ .

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Graph:

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$\"\"$

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$\"\"$

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(c)

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Observe the graph:

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As $\"\"$ increases the ellipse stretches vertically.

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$\"\"$

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(a) $\"\"$ and $\"\"$ on $\"\"$ .

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(b) Graph of the parametric equations $\"\"$ and $\"\"$ , when $\"\"$ and $\"\"$ . \ \

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$\"\"$

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(c) As $\"\"$ increases the ellipse stretches vertically.