$\"\"$

The equation of the graph is $\"\"$ and at $\"\"$ , $\"\"$ and $\"\"$ .

Find the tangent line at $\"\"$ .

Slope of the tangent line to the curve $\"\"$ at $\"\"$ is $\"\"$ .

Here $\"\"$ .

Slope of the tangent line to the curve $\"\"$ at $\"\"$ is $\"\"$ .

$\"\"$

At $\"\"$ , the value of the function $\"\"$ .

The point is $\"\"$ .

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

Substitute $\"\"$ and $\"\"$ in the line equation.

$\"\"$

Tangent line to the curve $\"\"$ at $\"\"$ is $\"\"$ .

$\"\"$

Tangent line to the curve $\"\"$ at $\"\"$ is $\"\"$ .