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存在性问题属于探索性命题.这类题目条件复杂,结论不定,解法灵活,综合性强,是训练和考查学生数学思维能力、分析和解决问题能力的极好题材,特别有利于培养学生的创新意识和探索能力.因此这类题目倍受高考
Existential problems belong to exploratory propositions. These topics have complex conditions, inconclusive conclusions, flexible solutions, and strong comprehensiveness. They are extremely good topics for training and examining students’ ability to think in mathematics, analyzing and solving problems, and are particularly conducive to cultivating students’ innovation. Consciousness and ability to explore. Therefore, such topics are greatly affected by the college entrance examination.