Difference between revisions of "Formula"

Latest revision as of 13:18, 26 March 2013

\({s_n = \sum_{i=1}^{n} x_i}\)

\[{v_n = \sum_{i=1}^{n} y_i}\]

\( \label{eq1} w_n = \sum_{i=1}^{n} z_i \)

equation \eqref{eq1}

aaaaa

bbbbb

@@ Line 1: / Line 1: @@
-<math>  s_n = \sum_{i=1}^{n} x_i </math>
+<math>{s_n = \sum_{i=1}^{n} x_i}</math>
-: <math>  s_n = \sum_{i=1}^{n} x_i </math>
+:<math>{v_n = \sum_{i=1}^{n} y_i}</math>
-:: <math> s_n = \sum_{i=1}^{n} x_i </math>
+<math> \label{eq1}   w_n = \sum_{i=1}^{n} z_i </math>
- <math>
-  erfc(x) =
-  \frac{2}{\sqrt{\pi}} \int_x^{\infty} e^{-t^2}\,dt =
-  \frac{e^{-x^2}}{x\sqrt{\pi}}\sum_{n=0}^\infty (-1)^n \frac{(2n)!}{n!(2x)^{2n}}
- </math>
- <math>
+equation   \eqref{eq1}
-   x =  \frac{1}{2}
- </math>
-<math>  s_n = \sum_{i=1}^{n} x_i </math>
+:aaaaa
+::bbbbb