6. Here is an example of part of a solution that several previous students submitted for the Week 4 Explore Activity: rompt: Next, we rewrite the vector h in terms of the unit vector u =- Fill in the blanks. ample Answer: herxv =rxr' = Irlu x (Irlu)' = [rlu x (Irl'u + Irl] = ()rlux [rlu') + (Irlux[rl'u) = (Irlux [rlu') + 2(lrixIrl)) = Ir/2(u xu') Identify the error in the above response (the response is the two filled in blanks: one on the 4th line and the other on the 6th line), explain why it is an error, and correct the error. [10 points]