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第一章 高斯附身(2 / 2)

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陈长亿愣了很长时间,而台下同学也在发愣,难道这家伙真地在听讲,只是假装在睡觉,偷偷学习又假装不认真的家伙最讨厌了。

“恩,那个杨同学,就算题目会做,上课时间也要认真上课啊。”陈长亿故作淡定,又拿出大义名分。

“这个,陈老师,最近在学函数。昨天我也碰到一道函数题,考虑到半夜两三点才解出答案,所以睡的有些晚了,陈老师见谅。也不知道这个题目到底对不对,现在写下来,希望陈老师帮忙看看。”

吴州附中,是极其变态的一所省重点中学,高一高二,就把三年需要学习的课程压缩到两年能教完,而到高三,重新复习回顾前两年教学。

杨帆想着虽然过了一关,但第二关大义还是难过的。如果等下通知班主任啊,班主任叫家长啊,这多麻烦,我就转移下你的视线,让你操心别的地方,省得再出蛾子。

杨帆又一次拿起粉笔,在黑板上写下题目:

函数f定义在正整数集上:f(1)=1;f(3)=3;且对每个正整数n有f(2n)=f(n),f(4n+1)=2f(2n+1)-f(n)。试确定小于或等于1988并满足f(n)=n的正整数n的个数。

“各位同学也可以好好看看,我想到半夜刚好解出。陈老师,请帮忙做下答案,我也可以对对是否准确。”

杨帆在讲台上不下来,斜着眼看陈长亿会怎么做。

底下悉悉索索声一阵,同学都拿出纸笔,开始计算起来。而陈长亿,也在开动大脑,这个有些难堪啊,这题目怎么这么难。

小主,这个章节后面还有哦,请点击下一页继续阅读,后面更精彩!要不要让他直接写出答案,这样一来,师道尊严怎么挽回啊。时间就这样静静过去,老师和同学都在计算,同学抓耳挠腮确没头绪,而保持镇静的陈长亿脸色异常难看。

陈长亿越是想答案心态就越急躁,眼看课堂时间过了大半,这可如何是好。

不会是杨帆这家伙,故意找个难度大得题目,让自己出丑吧。教了十几年高中数学,也不见得所有题目都见过。有问题,绝对有问题。

“哦,哈哈。杨帆这个题目出的好,大家放学后,还是可以再做做的。这道题目还是超过现在大纲的,各位同学选修就好。”

陈长亿为自己地急智敬佩,在杨帆瞪措手不及下,毫不犹豫地拿起黑板擦把题目擦掉。

小小举动,底下议论纷纷,声音入了耳朵,陈长亿就知道,学生可能怀疑自己了,这样怎么行,这像什么样。

“我这也有道题目,大家再做做看。那个,杨帆,你就呆在讲台上别下去了,等我题目出完,你顺便做下,给同学们讲解下。”

陈长亿出的题目有些冷门,还没超出高三大纲,如果只是为了让人难堪,这样的行为,陈长亿还是做不出来得,如果个个学生都聪明到超过自己,这是自己的幸运,这是作为老师最大的荣耀。

数学家高斯附身时间是一个小时,一堂课完全来得及。高斯是谁,在数学领域,他是超越阿基米德与牛顿的大师,一般题目还是秒回。

刷刷几下,又一道题目就干净利落解出。而台下,很多学生才刚刚有了些思路,都瞪大着眼睛看着杨帆。

来而不往非礼也,杨帆暗笑,擦干净黑板又道:“陈老师,我这还有道题目有些……”

铃……铃……下课声音刚好响起,陈长亿松了口气,拿起讲义,道:“没时间了,下课。”说完就匆忙离开,有眼尖同学看着他背影,似乎有些狼狈啊。

杨帆淡淡地一笑,在一道道火热目光,安安静静走到自己位子坐好。

同桌林雨薇与杨帆目光相撞,有一阵小小地躲闪,又有莫名的光亮。

喜欢全能数学家请大家收藏:全能数学家本站更新速度全网最快。

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