\". The opening direction of the less than sign is to the right, and t" />
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How to distinguish 1, greater than sign and less than sign: the distinction between greater than sign and less than sign depends on the opening direction of the symbol, and the left opening is greater than sign. The opening on the right is less than "; b; For any two real numbers A and B, their corresponding points A and B can be found on the same axis. If point a is to the left of point b, then a