$\"\"$

\

The parametric equations are $\"\"$ and $\"\"$ .

\

Find the curvature.

\

The curvature of the plane is $\"\"$ .

\

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

\

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

\

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

\

Substitute the corresponding values in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Therefore, the curvature of the curve is $\"\"$ .

\

$\"\"$

\

The curvature of the curve is $\"\"$ .