Thread: Σ summation increments View Single Post
 2008-04-18, 00:19 #1 roger     Oct 2006 22·5·13 Posts Σ summation increments 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! Attached Images