The function is $\"\"$ .

The tangent of a curve will be horizontal, if slope of the tangent line is zero.

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

$\"\"$

Equating $\"\"$ to zero.

$\"\"$

$\"\"$ and $\"\"$ .

When $\"\"$ , $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

Thus, the first point is $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

Thus, the second point is $\"\"$

The first point is $\"\"$ .

The second point is $\"\"$ .