1. Image-based thinking: Here, you can’t see many abstract symbols. Instead, there are some key diagrams and geometric illustrations, because abstract concepts and formulas often have their geometric expressions, and images Thinking and memory are one of the best shortcuts for a person to learn mathematics 2. Efficiency and patience: use the least formulas and concepts to derive complex formulas, and never add side effects to trivial topics or formulas! Save your precious time. 1. Image-based thinking: Here, you can’t see many abstract symbols. Instead, there are some key diagrams and geometric illustrations, because abstract concepts and formulas often have their geometric expressions, and images Thinking and memory are one of the best shortcuts for a person to learn mathematics 2. Efficiency and patience: use the least formulas and concepts to derive complex formulas, and never add side effects to trivial topics or formulas! Save your precious time. 1. Image-based thinking: Here, you can’t see many abstract symbols. Instead, there are some key diagrams and geometric illustrations, because abstract concepts and formulas often have their geometric expressions, and images Thinking and memory are one of the best shortcuts for a person to learn mathematics 2. Efficiency and patience: use the least formulas and concepts to derive complex formulas, and never add side effects to trivial topics or formulas! Save your precious time.