help with matlab coding

MATLAB can be used to manipulate and analyze data. Complete the following example using MATLAB's built- in functions. a) Create a 5x4 matrix of random numbers from -100 to 100. Assign this matrix to variable A. b) Create matrix B, which is A rounded towards (+) infinity. c) Set all odd-indexed elements of matrix B equal to 0. [i.e., (1,1),(1,3), (3,3), etc.] d) Set all values in B