Please show your solutions in solving. Please make it brief but readable/visible.

I will give you a very good feedback. Thank you!

2. Let F(t) = (et cost) i + (e sint ) j tet k. (a) Find symmetric equations of the line tangent to F at the point P(1, 0, 1). (3 points) (b) If f (t) = ed, compute (fF) (0). (3 points)