please see the attached question 4 and question 5

4. For the following problems. use Uctavefhiatlab to determine whether the following sets span R3. Remember you need to pick an arbitrary element in R3 and see if you can write it as a linear combination of the set of vectors. For each problem. a) Type the row reduced echelon matrix found by Octave. b} Tell me if this set spans R3 and if so. solve for o. ,3, c} Utherwe, explain how can you tell when there is no possible linear combination? 1 d} If the set spans 1113. what could you dene mn. etc. to construct the vector 2 3 1 1 l 3 [a] I] , '2 , [l [b] 1 , [I I] 1 3 [I [I 1 3 1 e 2 3 5 [c]u,1,e,1 {d}1..1. 1 u e 5 1 1 2 2 5. Consider the network diagram: 1 o This can be modeled using a linear system of the form As: = b with m = _2 . At each data Is point. create an equation that maintains equilibrium. That is the input equals the output. a} Set up an augmented matrix of the form As: = b which can be used to solve this equation. Note: If you need help, I have created a little video called I""I'iletzrllrork Flow\" with an example similar to this the Homework Tab of Blackboard. b} Suppose we know as; = 2100. determine what $1532.33134. and or, are