help please.
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you must use matlab or octave program. others are not allowed T.T. please use only above the two program to get solution.
for a, options to the left orright?; shift up or down?
for b, over the x or y axis?; shift downwards or upwards?
for c, shift to the right or left?; across the x or y axis?
for d, across the x or y axis?