DO NOT GIVE ME THE ANSWER that CHATGPT WOULD GIVE ME. I'M FURIOUS ABOUT THE LAST PERSON WHO ANSWERED ME. WHY WOULD I USE CHEGG IF I CAN JUST USE THE RESPONSE FROM THAT??????

For tiny dataset with 3 variables (as columns), X=202300012 (a) Use the matrix algebra formula to find the sample covariance matrix S and sample correlation matrix R by hand. (b) Try to find the inverse of the matrix S using the solve command. What's wrong? Why can't you find it