去年,笔者和王峰老师经过精心设计备课后给学生上了一节别样的习题课,今年高三复习“数列”时,笔者与吴老师携手,仔细研究近几年各地高考题,尝试摆脱资料束缚,进行一节“利用一题,多次变化”的习题课。题目:已知数列{a_n}中,a_1=1,函数f(x)=a_(n+1)x~2-2a_nx(n∈N~*)。1万丈高楼平地起——夯实基础 Last year, the author and Wang Feng teacher elaborately designed after class to the students on a different kind of exercise class, high school review “sequence ”, the author and Wu teacher, careful study of the entrance examination in recent years, try to get rid of Data binding, a section of “use of a question, many changes ” exercise class. Title: In the known sequence {a_n}, a_1 = 1, the function f (x) = a_ (n + 1) x ~ 2-2a_nx (n∈N ~ *). 1 million high-rise buildings from the ground - rammed foundation