should be X out = 0, and Y out has a certain output; and the right fig has the
same problem. It seems not correct of the direction of axis X and axis Y , or
the notes of middle and right fig is wrong.
If you look at the notations on the Left-Figure (indicating what produces a
positive x-axis and y-axis response), then the middle and right figures appear
to be correct. Though, personally I agree that the notations/conventions are a