Step 1:

  The equation of the curve is .

Differentiate   with respect of .

Substitute the values in above equation.

This is the slope of tangent to the curve at point .

.

Step 2:

Find the tangent line using the slope intercept form is .

Where is the slope and is the -intercept.

Substitute the values and in slope intercept form.

The tangent line equation is .

Solution :

The tangent line equation is .