2) Solve the initial value problems for r as a vector function of t: a) Differential equation: dr 3 dt r(0) = k ( + 1)!2i + etj + 1+1 Initial condition: - b) Differential equation: 16 please answer all will give 10 downvotes if i didnt understand clearly. Initial conditions: dr -32k dra r(0) = 100k and dr = 8i + 8j dt 3) Find the arc length, arc function of a) r(t)=(4 cos t)i + (4 sin t)j + 3t k, 0