$\"\"$

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The equation is $\"\"$ and points are $\"\"$ and $\"\"$ .

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The equation is $\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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The Derivative of the equation $\"\"$ at the point $\"\"$ ,the line equation is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ and $\"\"$ ,the line equation is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Consider the point $\"\"$

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The tangent line is

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$\"\"$

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The slope of the normal line is perpendicular to the slope of the tangent line.

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The normal line is

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$\"\"$

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Consider the point $\"\"$ .

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The tangent line is

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$\"\"$

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The normal line is

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$\"\"$

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$\"\"$

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Graph:

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$\"\"$

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Oserve the graph both functons ae orthogonal.

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$\"\"$

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$\"\"$

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Oserve the graph both functons ae orthogonal.