4. Addressing elements in a vector and matrix in Matlab

A. How do I reference element x of a vector?

B. How do I reference the element in row x, column y of a matrix?

C. How do I reference element x of a matrix?

of the previous column to form a vector. So if matrix B is size 3 X 2, then %element 5 is in row 2, column 2

C. How do I reference all elements of a vector?

D. How do I reference all elements of a matrix?

E. How do I reference several specific elements (e.g., x, y, and z) in a vector?

F. How do I reference several specific elements in a matrix?

G. How do I find the locations of nonzero values in a vector?

H. How do I find the locations of nonzero values in a 2-D matrix?

I. How do I reference the last element of vector A?

J. How do I concatenate the value x on the end of the row vector A?

K. How do I concatenate the value x on the end of the column vector A?