$\"\"$

\

The function is $\"\"$ .

\

Let the point of tangency be $\"\"$ .

\

Slope of the tangent line : $\"\"$ .

\

$\"\"$

\

Slope of the tangent line is $\"\"$ .

\

$\"\"$

\

The two points on the tangent line are $\"\"$ and $\"\"$ .

\

Slope of a tangent line with points $\"\"$ and $\"\"$ : $\"\"$ .

\

$\"\"$

\

Slope of the tangent line is $\"\"$ .

\

Equate the two slope of the tangent line.

\

$\"\"$

\

$\"\"$ or $\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

Point of tangency is $\"\"$ .

\

If $\"\"$ then slope of the tangent line is $\"\"$ .

\

Point - slope form of line equation : $\"\"$ .

\

Substitute $\"\"$ and point $\"\"$ in point slope form.

\

$\"\"$

\

$\"\"$

\

Equation of tangent line is $\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

Point of tangency is $\"\"$ .

\

If $\"\"$ then slope of the tangent line is $\"\"$ .

\

Point - slope form of line equation : $\"\"$ .

\

Substitute $\"\"$ and point $\"\"$ in point slope form.

\

$\"\"$

\

$\"\"$

\

Equation of tangent line is $\"\"$ .

\

$\"\"$

\

Equation of tangent lines are $\"\"$ and $\"\"$ .