Rewrite Eq. matrix optics in (c) as

Rewrite Eq. matrix optics in (c) as

[y2] = [A B] [y1]

[a2]    [C D] [a1]

Using simple optical system diagram (that include optical elements, input and output planes),

critique the significant of system matrix elements for the following cases:

(i) A = 0, (iii) C = 0, and

(ii) B = 0, (iv) D = 0.

(by the way it is gamma and alpha,sorry,thanks.!)