Answer the questions and provide examples as instructed: 1. Sketch the curve with vector function r(t) = ti+cos (mt)j for 0 t 2 (note that this sketch should be in 2-dimensions). 2. On the sketch, without evaluating them, include T and N at the point when t = 1 with arrows for T and N pointing in the correct direction. 3. Find r' (t) and r" (t). 4. For the vector function in part 1, find T and the tangential component of acceleration at, both when t = 1.