Hi, It’s \sum
as in \sum_{n=1}^{\infty} - Gerd. > On Jan 13, 2017, at 10:29 AM, Harding, Gene L <glhar...@purdue.edu> wrote: > > Hi, > > I am having trouble rendering an algebraic expression with a summation sign > (capital Sigma). I want an expression that looks like this, using variables > for the numeric portions of the expression: > <image003.jpg> > I am able to render the integration sign using this code: > $function = "$numer/$denom [pi + int($sum_numer/($sum_denom_n_coeff n - > $sum_denom_const),1,3)*sin($w nt)]"; > …providing an expression that looks like this: > <image004.png> > > But when I try to render the summation sign using this code: > $function = "$numer/$denom [pi + sum($sum_numer/($sum_denom_n_coeff n - > $sum_denom_const),n,1,3)*sin($w nt)]"; > …I get the following: > <image005.png> > > I have spent a couple of hours looking through the Maxima Manual and other > references, as well as some examples I have found online, but have not been > able to figure out the syntax for rendering the summation sign. Can anyone > offer advice on how to do this? > > Also, although not so important, if someone can tell me how to replace the > outer parentheses with square brackets, and/or how to display the numeric > part of the sine argument with commas (e.g., 90,000 vs 90000), I would really > appreciate it. > > Thanks, > > Gene L. Harding, PE > Associate Professor of ECET > 574-520-4190 > Purdue University-South Bend > > _______________________________________________ > LON-CAPA-users mailing list > LON-CAPA-users@mail.lon-capa.org > http://mail.lon-capa.org/mailman/listinfo/lon-capa-users -- Gerd Kortemeyer, Ph.D. Associate Professor of Physics Director, LON-CAPA Project Michigan State University http://www.msu.edu/user/kortemey/ _______________________________________________ LON-CAPA-users mailing list LON-CAPA-users@mail.lon-capa.org http://mail.lon-capa.org/mailman/listinfo/lon-capa-users