mersenneforum.org (https://www.mersenneforum.org/index.php)
-   Math (https://www.mersenneforum.org/forumdisplay.php?f=8)
-   -   Σ summation increments (https://www.mersenneforum.org/showthread.php?t=10215)

 roger 2008-04-18 00:19

Σ summation increments

1 Attachment(s)
How is a summation expressed when the increment from one value in an expression to another is greater than one?

For example, if I wanted the summation of a seried with the increment of the variable values being two, would I have to write earlier in the expression: let [variable] = 2*x ?

I don't know how to do TEX code, so here's a picture:

Thanks!

 R.D. Silverman 2008-04-18 01:48

[QUOTE=roger;131803]How is a summation expressed when the increment from one value in an expression to another is greater than one?

For example, if I wanted the summation of a seried with the increment of the variable values being two, would I have to write earlier in the expression: let [variable] = 2*x ?

I don't know how to do TEX code, so here's a picture:

Thanks![/QUOTE]

\sum_{n=1}^{\infty} \frac{1}{(2n-1)} would be over all odd numbers

replace (2n-1) for even numbers with just (2n)

 Orgasmic Troll 2008-04-18 07:04

[QUOTE=R.D. Silverman;131807]$$\sum_{n=1}^{\infty} \frac{1}{(2n-1)}$$ would be over all odd numbers

replace (2n-1) for even numbers with just (2n)[/QUOTE]

(threw in tex tags)

 All times are UTC. The time now is 14:54.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.