$\"\"$

The function is $\"\"$ .

Differentiate on each side with respect to $\"\"$ .

$\"\"$

Derivative of a inverse trigonometric function: $\"\"$ .

Derivative of a inverse trigonometric function: $\"\"$ .

$\"\"$

To find the relative extrema, solve $\"\"$ .

$\"\"$

Squaring on each sides.

$\"\"$

Let $\"\"$ .

$\"\"$

The above equation is in the form of a quadratic equation $\"\"$ .

The roots of the quadratic equation is $\"\"$ .

$\"\"$

Compare $\"\"$ with $\"\"$ .

$\"\"$

Substitute $\"\"$ in above value.

$\"\"$ .

$\"\"$

The negative root is not considered since, $\"\"$ can not be negative.

$\"\"$

$\"\"$ .

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

$\"\"$

The point is $\"\"$ .

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

The point is $\"\"$ .

$\"\"$

Derivative on each side with respect to $\"\"$ .

$\"\"$

Identify the nature of the extrema points.

\ \

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

The relative maximum point is $\"\"$ .

The relative minimum point is $\"\"$ .

$\"\"$

The relative maximum point is $\"\"$ .

The relative minimum point is $\"\"$ .