cheez Messages 26 Reaction score 0 Thread starter Jan 23, 2007 #1 Actually it's a math question. Can I cancel V from both side in step 3? thx!
marcusl Science Advisor Messages 2,977 Reaction score 702 Jan 23, 2007 #2 No you can't. You need to take their partial derivative.
cheez Messages 26 Reaction score 0 Jan 23, 2007 #3 http://farm1.static.flickr.com/122/367693621_f74963f0ea_o.jpg" I've taken the derivative and substituted beta and k? into it. How to make it looks like step 6? thx! Last edited by a moderator: Apr 22, 2017
http://farm1.static.flickr.com/122/367693621_f74963f0ea_o.jpg" I've taken the derivative and substituted beta and k? into it. How to make it looks like step 6? thx!