Please make it easy to read! Not trying to offend anyone. Thank you in advance!

9. A graph of a vector function r(e) = ( sin (-6), cos(-4), cos 4t), for for Osts 2, is shown in the figure below. a. [6 pts) Find r' (t) and Ir' (t). b. [4 pts] Plot two copies r' (-1.18), one in standard position and one starting at r(-1.18). Use a straightedge to ensure position and magnitude are accurate. [4 pts] Find values oft for which r' (t) is parallel to the xy-plane. 2 0.5 - 1.0 -0.5 0.0 -1.0 0.5 -0.3 010 0.5 1.0 1.0 -0.5 y -1.0 9. A graph of a vector function r(e) = ( sin (-6), cos(-4), cos 4t), for for Osts 2, is shown in the figure below. a. [6 pts) Find r' (t) and Ir' (t). b. [4 pts] Plot two copies r' (-1.18), one in standard position and one starting at r(-1.18). Use a straightedge to ensure position and magnitude are accurate. [4 pts] Find values oft for which r' (t) is parallel to the xy-plane. 2 0.5 - 1.0 -0.5 0.0 -1.0 0.5 -0.3 010 0.5 1.0 1.0 -0.5 y -1.0