论文部分内容阅读
最近笔者在高三数学复习中与学生一起处理了一道经典老题,在教学中多次出现教学意外,笔者及时调整教学策略,重构课堂动态生成.期间师生多次经历了“行到水穷处”的窘境,“坐看云起时”的愉悦,演绎了一幕幕令大家流连忘返的精彩瞬间.一、题目及标准答案题目设a≥1,若对于任意x∈[1,2],不等式x|x-a|+3/2≥a恒成立,求实数a的取值范围.
Recently I was in the third year math review with the students together to deal with a classic old problem, teaching a number of occasional teaching accidents, the author timely adjustment of teaching strategies, reconstruction of classroom dynamic generation. During the teachers and students repeatedly experienced 1, the title and standard answer subject set a ≥ 1, if for any x ∈ [1, 2], the inequality x | xa | + 3/2 ≥ a constant holds, find the real a range of values.