Question: If you already know |a N | and |v|, then the formula a N = k |v| 2 gives a convenient way to find the

If you already know |a_N| and |v|, then the formula a_N = k |v|² gives a convenient way to find the curvature. Use it to find the curvature and radius of curvature of the curve

(Take a_N and |v| from Example 1.) t > 0. -

r(t) (cost + t sin t)i + (sin t t cos t)j, t > 0. -

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