\sum_{n=2}^{\infty} \begin{pmatrix} {n}\\ {2} \end{pmatrix} z^{n}
Dec 28, 2010 #1 geft 148 0 [tex]\sum_{n=2}^{\infty} \begin{pmatrix} {n}\\ {2} \end{pmatrix} z^{n}[/tex]
Related General Math News on Phys.org Novel method for measuring spatial dependencies turns less data into more data Interactions within larger social groups can cause tipping points in contagion flow 'Universal law of touch' will enable new advances in virtual reality
Related General Math News on Phys.org Novel method for measuring spatial dependencies turns less data into more data Interactions within larger social groups can cause tipping points in contagion flow 'Universal law of touch' will enable new advances in virtual reality
Dec 28, 2010 #2 Office_Shredder Staff Emeritus Science Advisor Gold Member 3,914 184 Which part is confusing you?
Dec 28, 2010 #3 geft 148 0 It's supposed to be a power series, but I don't understand how to decipher the brackets.
Dec 28, 2010 #4 micromass 22,089 3,286 It's a binomial coefficient. It's defined as [tex]\binom{n}{k}=\frac{n!}{k!(n-k)!}[/tex] See http://en.wikipedia.org/wiki/Binomial_coefficient
It's a binomial coefficient. It's defined as [tex]\binom{n}{k}=\frac{n!}{k!(n-k)!}[/tex] See http://en.wikipedia.org/wiki/Binomial_coefficient