(a)

The equation of the curve is  and the point is .

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Differentiate on each side with respect to .

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Slope of the tangent line is derivative of the function at the given point.

Find the derivative of the function at .

Slope of the tangent line is .

Find the tangent line at .

Point slope form: .

Substitute and in the above formula.

The tangent line equation is .

(b)

Graph of the curve and tangent line  .

(a) The equation of a tangent line  .

(b) Graph of the curve and tangent line .

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