For this patient, the oncologist would like to ensure that each turnor voxel gets a total dose of at least 7, and each critical structure voxel gets a total dose of at most 5, while the sum of the total dose delivered to the healthy tissue and the critical structure is minimized. 1. Formulate the problem of determining the optimal beam intensities for this particular patient's case as a linear optimization problem. Be sure to clearly indicate what your decision variables, objective and constraints are. What is the optimal objective function value, and what are the optimal values of the decision variables