tennishaha Messages 21 Reaction score 0 Thread starter Apr 24, 2010 #1 In the attached equations, for the second last step to the last step why dSdS=sigma2S2dt ? Attachments pic02.jpg 5.8 KB · Views: 498
mathman Science Advisor Homework Helper Messages 8,130 Reaction score 575 Apr 24, 2010 #2 I could not get picture.