I just need to know what matlab buit in function this is

Objectives: Grade: Nested for loop, continued Problems: 1) Fill out the trace table for the variables in the code shown below. The first step is partially done for you. clear clc A-[3-514; Efficient method: What is the built-in MATLAB function is being done here? Write it on the paper -695-11'; B-zeros (size(A)): col-1:2 row-1:4 k-5-row; B(k, col) -A(ow, col) Go from top to bottom on the left hand side of the following chart, and then do the same thing for the right hand side. col row k B. 06 2. 11 00 3 0 0 -6 | | 2 | 3 |1 50 3 210 2 3 2 5