2014年高考数学必考知识点之易错点冲刺（2014 college entrance examination mathematics fallible exam knowledge points sprint）.doc

2014年高考数学必考知识点之易错点冲刺（2014 college entrance examination mathematics fallible exam knowledge points sprint） Abstract: the students are busy preparing for the college entrance examination in 2014, New Oriental network to organize the 2014 college entrance examination mathematics entrance channel to make 70 mistakes. The characteristics of elements in a collection of 1. unknown. Elements with uncertainty, randomness, different nature of the three. Forget the 2. empty. The A contained in the B for the set A, A can be easy to miss the empty set. For example, A (x-1) square 0, x = 1 A is null, is also easy to miss her collection or set B. subset number. 3. ignore the dissimilarity of elements in the collection. 4. necessary and sufficient conditions for reverse error. Necessary but not sufficient and necessary sufficient difference -- such as: P and Q can launch Q, no P, is not sufficient and necessary conditions, P can not launch Q, but Q can launch P, is necessary but not sufficient. 5. of the improper propositional negation with quantifiers. Negation of a quantifier proposition, first no quantitative words, no conclusion. 6. please ignore the details of error function domain. The root value must be equal to 0, the natural logarithm is greater than or equal to zero, and so on. 7. the monotonicity error of judgment. We must pay attention to the function of symbols, such as f (-x) is monotone and the primary function of the opposite. Two common errors in the parity function 8. To determine the main attention to 1, the domain must be symmetric about the origin, 2, pay attention to the odevity of judgment theorem, are careful about minus. The range of the independent variable 9. ignore function domain of the solution. A word about the function of the problem, whether it is for what you want, the first step is to look at the domain, this is the key. 10. abstract function reasoning is not rigorous error. 11. cannot achieve quadratic function conversion, quadratic equation wit