* Title:f of x
* Designer:Sly
* Type:Solution
* Follows:
* Physics:2
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                                                  
                    f                             
                /DDDDDD\                          
               /DDDFDDDD\                         
              /DDDg$x$fDD\                        
             /DDDD:MDM:D+D\                       
            /DDDDD$$4M$$$$D\                      
            DDDDDD>M3M>D:<DD                      
            ZZZZZZDM2$$$$$DD                      
                 ZD$1D<<KFDD                      
            ZTTTTZDW<DD?$DDD                      
            Z$$$$$$$DDD>:+DD                      
            ZZZZZZD<DDDD$g$D                      
            DDDDDDDDDDDDDDWD