Work Problems (60 points)- You need to show all your works 1) Let F(t)=4ti+(t² +t) j+cos(5t-10) k a) (20 points) Find th

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Work Problems 60 Points You Need To Show All Your Works 1 Let F T 4ti T T J Cos 5t 10 K A 20 Points Find Th 1 (23.54 KiB) Viewed 45 times

Work Problems (60 points)- You need to show all your works 1) Let F(t)=4ti+(t² +t) j+cos(5t-10) k a) (20 points) Find the unit tangent vector to the above curve at the point t = 2 b) (20 points) Find the tangent vector equation of the line at the point t = 2 2) (20 points) Consider f(x, y) = ln (x² + y2). Verify that faz + fyy = 0