I am having some trouble with the syntax of creating a matrix and entering terms within a program. What I know I need to do is multiply this(a,b,c,d are based on user input for original 2x2 matrix terms):(4X4)X (4X1)

[0, (a-d), 0 , b](-1) [bc]

[c, 0 , (d-a), -c] [0 ]

[0, -c , b , 0] X [0 ]

[c, -c , b , 0] [0 ]

Thank you so much I have tried to define matrices in the program but have had no luck whatsoever, I've just been getting syntax errors.