四十八、因为爱情?(2 / 2)
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自学一下就好了……
听到江水源如此轻描淡写,余勇不仅菊花发紧,而且两腿发软、后脊发凉。他很想揪着江水源衣领恶狠狠地问一句:数学专业课有特喵不难的吗?别说自学一门新课,就是复习已经学过的《初等数论》,都差点要了我的老命,好吗?
他恨啊!
他恨,为什么当初就答应了女票的请托!
他恨,为什么自投罗网去找高老师问那个见鬼的问题!
他恨,为什么没有硬着头皮拒绝高老师让他参加讲习班的提议!
一失足成千古恨!失足男青年一边懊悔,一边还得怂怂地请教:“那你第一题除了幂级数解法外,还用了哪两种解法?”
江水源以为余勇是在切磋探讨,也没藏着掖着:“还用了李雅普诺夫人工小参数法、Adomain分解法、δ展开法,至于有没有其他更多更好的法子,我就不清楚了。你用的是什么解法?”
余勇只顾着记江水源提到的几种方法,根本没有在意后半句的问题。李雅普诺夫人工小参数法具体是什么,他不太清楚,但李雅普诺夫还是知道的,李雅普诺夫稳定性、李雅普诺夫第二方法,《常微分方程》教材里都有,但Adomain是什么鬼?他把姿态摆得很低:“请问,Adomain分解法是?”
江水源解释道:“Adomain分解法又叫逆算符法,是由米国数学物理学家G.Adomain提出并发展起来的,由于其适用范围广泛,具有强大的解题能力和较快的收敛速度,常被用来求解线性和非线性数学物理方程的近似解析解。”
余勇不好意思地挠挠头:“不好意思,我以前都没听过还有这种解法。”
江水源大度地替他解了围:“Adomain分解法是近年来发展出来的一种方法,大部分教材上都还没有写进去,不知道是很正常的。我也是偶然之间在别的资料上看到。”说着他拿起一只马克笔在白板上开始演示:“它的基本思路是首先把所要求解的微分方程分解为若干部分,其次将方程的解分解为无数个解变量,让这些解变量之和以任意的高精度逼近真解,最后应用逆算符技术,也就是由低阶解分量推出高阶解分量,就会得到微分方程的逼近解甚至是精确解。”
余勇掏出纸笔开始狂记,跪舔的姿势更加标准:“江师弟你真厉害,连这么前沿的方法都知道。”当然,理工男的吹捧技术也就这样了。要是换个文科生来,保证能用拍马七十二式,360度无死角分分钟舔出史无前例的新高度。
江水源此前只跟系里老师打过交道,和学生还没怎么接触过。他觉得从学生角度来了解学校可能更客观,也更贴合自己需求,眼下正好是个机会:“余师兄,你觉得咱们学校哪些课比较有趣,值得去听听?”
“有趣的呀!”余勇摸着下巴沉吟片刻,“我觉得食品科学学院的《调酒技术》还有《茶艺与中国传统文化》比较有趣,上课就是调调酒、喝喝茶、吹吹牛,考试也容易过。另外艺术传媒学院的《影视欣赏》、《基础摄影》也不错,——嗯,要说最有趣的,应该是社会学院的《大学生性社会学》,不仅内容劲爆,老师上课还会理论联系实际,嘿嘿,你懂得。就是选课的时候一座难求。”
看到余勇挤眉弄眼,一副同道中人的神情,江水源满头黑线:“那咱们系里有什么课值得好好听听?”
余勇此时也放下对江水源的敬畏之心,翘着腿坐在椅子上:“咱们系的课本来就枯燥得要命,那帮老头子又只会照本宣科,一个个都恨不得直接用点读笔。每次上课,感觉他们不是在教我们知识,而是在喂我们吃安药,还是催眠效果特棒的那种。你说值不值得好好听?”
“……”江水源眼皮微跳。
余勇又好奇地问道:“你这么厉害,为什么会来我们这种学校?”
江水源正想着该怎么回答他,他突然如有所悟:“是因为爱情吧?唉,我跟你说,我也是因为爱情,才被揪到了这个班上受罪的。所以说,色字头上一把刀,爱情它害人呐!”
江水源瞪大眼睛:EXM?你说的啥意思?怎么感觉聊的不在一个位面上?咱们之间是不是有什么误会?