Sensitivity analysis gives you insight in how the optimal solution changes when you change the coefficients of the model.

Use the solver in Excel to find the shortest path from node S to node T in an undirected network.

Use the solver in Excel to find the number of units to ship from each factory to each customer that minimizes the total cost.

Use the solver in Excel to find the maximum flow from node S to node T in a directed network.

Use the solver in Excel to find the assignment of persons to tasks that minimizes the total cost.

Use the solver in Excel to find the combination of capital investments that maximizes the total profit.