1. Using the given information determine the dot product: 8 = 125.47 Communicate a reoron for you answer 2. a) Calculate the dot product a - b given a = (2. -3,1). 6 = (5,2,-4) b) Calculate b| 3. Given that a = (p, -3,1) and 5 = (3,1, -2) and that a . b = 10 determine p. 4. Is (a . b) (a - b)& meaningful or meaningless? Explain your choice