The function is  and the point on the curve is .

Apply derivative on each side with respect to .

.

Quotient rule of derivatives : .

.

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

Substitute  in the derivative function.

.

Slope of the tangent line to the curve at the point  is .

Find the tangent line.

Point-slope form of line equation : .

Substitute  and  in point-slope form.

The tangent line equation is .

The tangent line equation is .