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第88章 不用纸和笔,直接口算秒答(2 / 2)

加入书签 | 推荐本书 | 问题反馈 |

旧时画面重现。

但被打脸的人却换了。

作为旁观者。

谢宏伟差点没忍住笑出声。

至于曹天元,脸上严肃表情也早就不见,而是情不自禁的闪过一丝得意。

其暗暗瞥了周凌峰一眼,“呵呵,你以为我不知道你出题的小伎俩?”

“只不过我不在意罢了。”

“毕竟……”

“在绝对的实力面前,你再多的小伎俩都是纸老虎,一击就碎。”

“……”

“不可能!”

“这绝对不可能。”

“这可都是奥数竞赛题,怎么可能连想都不想,便直接口算出答案?”

周凌峰还是难以置信,又对江南指向第二题:“你说这道题选哪项?”

“C,3√3。”

“第三道呢?

“C,3^999。”

“第四道呢?”

“A,两支玫瑰价格高。”

“最后一道压轴题?”

“D,lg|sinx|。”

“……”

周凌峰:“……”

在场老师:“……”

众皆傻眼。

不用纸和笔,完全是口算秒答。

这还不是重点……

重点是从周凌峰的反应就能知道,江南这些题特么全部答对了?

周凌峰感觉自己要疯。

是做梦么?

但……

他掐了自己一把。

尼玛!

真特么疼啊!

这根本不是在做梦啊!

可……

不是做梦。

难道世上真有如此天才?

还是说……

江南在作弊?

周凌峰扭头看向曹天元:“老曹,你老实告诉我,你是不提前把这卷子给江南看了,还给了他答案,所以他才知道?”

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!“老周,你傻了吧?”

曹天元没好气骂了声,“这卷子可是你临时出的,当做宝贝疙瘩似的,就此一份,都没给我看过,我怎么给江南看?”

“也……也对!”

周凌峰点了点头。

的确……

这卷子就他一个人知道。

曹天元怎么会有?

“那……你平时一直在给他特训?你把近二十年的竞赛题都给他做了?”

曹天元:“……”

直接无语。

他要是给江南特训过就好了。

但问题是……

江南连他上课都不听,哪还有特训?

“江南,你就给咱们的周组长,详细讲讲解题过程吧!免得他怀疑这怀疑那。”

曹天元直接把皮球踢给江南。

江南点了点头,指着第二题:“由图可知,设BD=t,则OD=√3t-1,从而B(√3t-1,t)满足方程x^2-y^2=1,可以得到=√3,所以等边三角形,△ABC的面积是3√3。”

一题刚结束。

江南又指向下一题。

“这题要求的是展开式用每间降两项系数的和,可联想到1的单位根,用特殊值法……a0+a3+a1998=3^999,故选C。”

“……”

“这最后一题就更简单了。”

“直接用排除法。”

“y=sin|x|不是周期函数,随便做图就知道,可排除选项A。”

“y=cos|x|的最小正周期为2π,且在(0,,π2)上是减函数,排除B。”

“y=|ctgx|在(0,π2)上是减函数,排除C,最后就只有D,lg|sinx|了。”

“……”

“七三二九!”

“零八八!”

“七二!”

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