Math 153 Concept Check 16 Problem 1) A student is asked to calculate the cross product between the vectors and . The student notices that the two vectors are parallel, and based on that, their answer is 0 What is wrong with the student's answer/reasoning? (Warning: The mistake is subtle.) Problem 2) Let u = and D = (a) Calculate u X v. (b) Calculate d X u. (Hint: There's an easy way to do this, and a hard way.) (c) Calculate 5u x 4v. (Hint: There's an easy way to do this, and a hard way.)