Review the graph. What is the magnitude of the vector shown?

5
13
StartRoot 5 EndRoot
StartRoot 13 EndRoot

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Ineed if you could explain and give me the answer you! this needs done

Which of the following is the major negative aspect of crossover designs for research studies? a. prohibitive cost b. residual effects c-subject drepout d. incomplete randomization e. large sample size required