169170171

术子：                                                                    
                                                                           
 　　　　还生我的气吗？                                                    
                                                                           
 　　　　　　我总是喜欢叫你术子，知道为什么吗？因为你的名字和我最喜欢的数学
 有一个字发音相同，而且在小学的时候，数学就叫做算术 。                     
                                                                           
 　　　　　　也许你真的是生我的气了，然而你知道为什么我陪你的时间在定义域里
 变成了一列减函数了吗？我是有原因的。我们都高三了，面临着即将到来的各种新的
 排列组合，我是多么想继续和你呆在同一个组合里无穷下去，我多么希望我们的爱情
 是一条射线，只有起点没有终点，而不是一根只有高中三年那么丁点儿的线段。    
                                                                           
 　　　　　　如果从现在开始我们都努力学习，则上面的理想可以实现。这是一个真
 命题。我所作的一切一切都是在为我们的将来作辅助线， ∴你不应该生我的气，→我 
 对你说："别生气了。"                                                      
                                                                           
 　　　　　　但你依然没有原谅我，你对我说："⑴我们两个之间的距离越来越远    
 了。⑵你跟别的女生好了。"看来，我真的需要证明一下你 这两个推论是错误的 了。
                                                                           
                                                                           
 　　　　证明：⑴你说我们之间的距离越来越远了。                             
                                                                           
 　　　　我注意了一下，班里的座位横着有七排，竖着是9行，再加两个道，可以算 
 11行。 设坐在5行四排的同学为坐标原点，第四排为x轴，第5行为y轴。 则你的坐  
 标：你（-4，1）；我的坐标： 我（3，-2）。                                 
                                                                           
 　　　　∴我们俩之间的距离： | 你我 |=根号下（3+4）平方+（-2－1）平方      
                                                                           
 　　　　　> ≈7.6                                                         
                                                                           
 　　　　∵当两人距离 L≥10 时，才可以算远。0＜7.6＜10                       
                                                                           
 　　　　∴我们俩之间距离并不远。                                           
                                                                           
 　　　　∴原命题为假命题，错误。                                           
                                                                           
                                                                         
                                                                           
 ⑵你说我跟别的女生好了。                                                   
                                                                           
 　　　　在做题之前先说明一下，为了做题方便，这里暂用"她"来代替"别的女 生" 
                                                                           
                                                                           
 　　　　设：一RtΔABC，∠C=90度，斜边AB=我，两条直角边分别对应你和她。我和你
 的夹角∠ABC=α。（说明：至于为什么只设我们之间的夹角，而不去管我和她的，那是
 因为我们曾经有过交集，而你也说过，相信我和别的女生的关系还没有发生到有公垂
 线的地步。这一点，我略感安慰）                                            
                                                                           
 　　　　则我们俩在一起 ∵你在我上面 ∴为 cosα                               
                                                                           
 　　　　我和她 ∵我在她上面 ∴为 cscα                                       
                                                                           
 　　　　你和她 ∵你在她上面 ∴为 ctgα                                       
                                                                           
 　　　　∵我和你的夹角α（我确信曾经有过）非常小（小到两片药便对付了）      
                                                                           
 　　　　∴α趋于0（α＞0）                                                   
                                                                           
 　　　　当α=0时，①cosα=1， ∴我心里只有一个你                             
                                                                           
 　　　　②cscα=0， ∴我和她没有关系                                         
                                                                           
 　　　　③ctgα=+∞，　∴你比她重要无数倍                                     
                                                                           
 　　　　∴我爱你，不爱她。                                                 
                                                                           
 　　　　同理可证：我爱你，不爱她'、她'、她'……                             
                                                                           
 　　　　将此概念推广开来，                                               
                                                                           
 　　　　则可证：我爱你，不爱每一个"别的女生"                              
                                                                           
 　　　　即：我爱你，而不爱每一个你所说的"她"。                            
                                                                           
 　　　　∴我爱且仅爱一个你                                                 
                                                                           
 　　　　∴原命题是假命题，错误。                                           
                                                                           
 　　　　好了，现在，还生气吗？我与"她"就像是开口向上的抛物线与坐标横轴，而
 我对"她"的心：△＜＜＜0，                                                  
                                                                           
 　　　　∴不会有交点。                                                     
                                                                           
 　　　　我与"她"就像是两根异面直线，无论怎样延伸，不会有交点。            
                                                                           
 　　　　我与"她"就像是双曲线的两支。尽管有些对称，但是没有交点。          
                                                                           
 　　　　其实，术子，到现在，我仍然没有求出你所说的那个"她"的具体值是多    
 少。不要再提"她"了，让"她"永远消失吧！                                    
                                                                           
 　　　　术子，让我们回到一起吧，忘记所有不愉快的事，和差化积，从新整理思  
 路。                                                                      
                                                                           
 　　　　术子，真的原谅我吧，我绝不会背着你搞出什么增根，不信的话，我随时接
 受你的检验。                                                              
                                                                           
 　　　　术子，你知道吗？在你不理我了的这些日子里，我的生活就好象是一列等比
 数列{an}，首项a1=痛苦，公比q=想念（q＞1 ），n=天数，前n项和Sn=，我实在不能
 忍受这痛苦和想念相交构成的煎熬了。术子，给我一个正确答案吧！可以吗？     
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
 　　　 昨天，我做出一道诗，在这儿送给你。                                 
                                                                           
                                                                         
                                                                           
 　　　　术子，                                                            
                                                                           
 　　　　你是我对称轴，                                                    
                                                                           
 　　　　如果没有你，                                                      
                                                                           
 　　　　我找不到另一半自己；                                              
                                                                           
                                                                       
                                                                           
                                                                       
                                                                           
 　　　　术子，                                                            
                                                                           
 　　　　你是我的值域，                                                    
                                                                           
 　　　　如果没有你，                                                      
                                                                           
 　　　　我不知道该去哪里；                                                
                                                                           
                                                                       
                                                                           
                                                                       
                                                                           
 　　　　术子，                                                            
                                                                           
 　　　　你是我的公理，                                                    
                                                                           
 　　　　如果没有你，                                                      
                                                                           
 　　　　我没有一点头绪；                                                  
                                                                           
                                                                       
                                                                           
                                                                       
                                                                           
 　　　　术子，                                                            
                                                                           
 　　　　你是我的必要条件，                                                
                                                                           
 　　　　也许你可以没有我，                                                
                                                                           
 　　　　但是，                                                            
                                                                           
 　　　　我绝对不能没有你！                                                
                                                                           
 　　　　好了，术子，到这吧，我的心真的永永远远都只有一个你。              
                                                                           
 　　　　写了这么多，你不会感到复杂吧？最后，我还要写一句话。              
                                                                           
 　　　　答：我爱你。                                                      
                                                                           
 　　　　请求你原谅的maths                                                 
                                                                           
                                                                          
 于月亮为半圆时