$\"\"$

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The function is $\"\"$ , $\"\"$ and $\"\"$ .

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Consider $\"\"$ .

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Differentiate on each side with respect to $\"\"$ .

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$\"\"$

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The differential function is $\"\"$ .

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$\"\"$

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The differential function is $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in differential function.

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$\"\"$

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Hence, the value of $\"\"$ is $\"\"$ .

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$\"\"$

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$\"\"$ change in $\"\"$ will cause $\"\"$ to change by a small amount $\"\"$ .

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Find $\"\"$ using the formula $\"\"$ .

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Substitute $\"\"$ and $\"\"$ in the above formula.

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$\"\"$

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Find point on the curve at $\"\"$ .

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$\"\"$ .

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Therefore, the point on the curve is $\"\"$ .

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$\"\"$

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Graph:

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Graph the curve.

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Draw the tangent line passing through the point $\"\"$ .

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$\"\"$

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$\"\"$

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The value of $\"\"$ is $\"\"$ .

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The value of $\"\"$ is $\"\"$ .