pls let me know how to do this.

2415 Math Review Chapter 12 1. Find the vectors r(2) and r'(2) for the following vector function. r(t) = (3+ 2t)i+(6+412)j+ 2k 2. Sketch the curve represented by the vector-valued function r(t) = (4 -t)i + vti and give the orientation of the curve. 3. Find r'(t) given the following vector function. r(t) = - 3t it 5 k4. Find the principle unit normal vector to the curve given below at the specified point. r(t) = ti + 2t j, t = 12 9' The position vector FU) = (9111 1', T, 913) describes the path of an object moving in space. Find the velocity V0) 0f the object