You can roughly understand the system principle of paper duplicate checking. The general duplicate checking system can only check the text, but it can't check the pictures and formulas at present. When we submit the paper, we can't recognize the pictures and formulas. Therefore, the paper does not check the formula when checking the duplicate.
Although many duplicate checking systems can't check the formula at present, with the improvement of the duplicate checking system, the formula in the paper can definitely be checked in the future. If you copy other people's formulas, it will be easy to repeat the random examination papers in the future. And it's easy to see when the tutor reads the paper. In order to improve the quality of the paper, we should not copy it, but insist on originality.
At present, the paper-based duplicate checking system can hardly identify formulas and duplicate checking formulas. However, we need to pay more attention when finishing the paper.