You want to compare the cost of producing some different items. To produce each item, a number of different resources are required. For each item you know how many units of each type of resource is required. This information is given as a matrix, where each column corresponds to an item and each row corresponds to a resource. The values in the matrix denote how many units of the resource is required for the item. Furhtermore, you know the cost of each resource, which is given as a vector.
Problem definition
Create a function that computes the cost of each item and returns it as a vector. Find an elegant and simple way to write the code using what you have learned about matrix and vector operations.

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function itemCost = computeItemCost1(B, A)

if nCol1 ~= nRow2
    error('inner dimensions must...

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