Hellow guys, Welcome to my website, and you are watching Calculus 2 Lecture 9.7: Power Series, Calculus of Power Series, Ratio Test for Int. of Convergence. and this vIdeo is uploaded by Professor Leonard at 2014-04-15T17:51:32-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.