1. The problem statement, all variables and given/known data Download the mat file Gettysburg.mat. View in a new window and load it in the workspace using the command clear; load Gettysburg; This loads a 1-by-1452 char array GA that is the Gettysburg Address in English. Display the first 100 or so characters for yourself to see this. In this array, how many times does the char array 'that' occur? Hint: You do not need to count the occurrences of 'that' by hand. What command can be used to find the starting index of a specified string (char array) in a larger string (char array)? How many times does the char array 'for' occur? How many times does the char array 'we' occur? How many times does the char array 'We' occur? 2. Relevant equations 3. The attempt at a solution I don't know what command to use to find the number of words in the character array, and the hint went over my head, so I am unsure what to do with it. I did Code (Text): char([GA]) to get the statement to show up, but to show how many times I get ''that'' in the statement I keep trying variations of Code (Text): Char([GA, 'that')] The command Code (Text): numel([GA, 'that']) gives me the number of characters, 1456. I guess a word is not an element, but a character is. So I don't know where to go from here. EDIT: I found the command Code (Text): strfind(GA, 'that']) and it gives me Code (Text): ans = Columns 1 through 6 145 234 346 394 467 472 Columns 7 through 12 532 1096 1155 1220 1248 1292 Column 13 1359 and I don't know how to interpret this. EDIT2: I guess the columns is the number of times the word shows up. Is the number supposed to be the beginning character number where that word is?