Problem number 2 can be found here: https://www.chegg.com/homework-help/questions-and-answers/2-complete-following-truss-shown-figure-1--label-structure-degrees-freedom-start-free-node-q23738061

4. Building a truss solver is simply a series of matrix manipulations and math operations, so you will need to be very comfortable with order of operations and matrices. Using your Problem 2 labeling, build a matrix for storing E, A, L, and for every element and another matrix for storing the ID Array of the respective clement. Hard-code the number of free DoFs, fixed DoFs, and total DoFs. a. Build a for loop which can automatically size based on the number of elements which will compute [K]element and store these in a 3-D matrix. b. Build a series of for loops which can extract each individual entry in the 3-D [K]element matrix stack in the following order: per column, then per row, then per matrix. c. Based on part b, switch the order of the [K]element matrices by 1; that is K(1,1,1) is now K(2), K(1,1.2) is now K(1,1,3), and K(1,1,3) is now K(1,1,1). Do this per operation per row