Re: [LON-CAPA-users] Fail to search on every keyword

2017-01-13 Thread Stuart Raeburn
Itay, Recently, all the searches for resources that I have committed have failed. Your LON-CAPA library server is currently unable to sustain outbound connections to a number of other LON-CAPA servers in the network. (I tested connectivity for a couple of LON-CAPA nodes -- at both

Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

2017-01-13 Thread Rex Abert
To put commas into the numbers, this link is helpful: http://www.perlmonks.org/?node_id=653 Rex Abert Associate Professor of Mathematics Tallahassee Community College From: lon-capa-users-boun...@mail.lon-capa.org

Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

2017-01-13 Thread Harding, Gene L
Hi Gerd, et al, Sorry, but it is still not working. Now nothing is rendered at all, and I get this error: [cid:image001.png@01D26DBF.D0AE4A30] This is the function definition: $function = "$numer/$denom [pi + \\sum_{n=1}^{\infty}($sum_numer/($sum_denom_n_coeff n -

Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

2017-01-13 Thread Gerd Kortemeyer
Hi, Ah, okay, it’s inside Perl double quotes! Sorry, I did not catch that. In Perl, “\” is the escape character, so you’ll need “\\” - an escaped backslash. Apologies, I didn’t make the connection the first time around. - Gerd. > On Jan 13, 2017, at 11:05 AM, Harding, Gene L

Re: [LON-CAPA-users] Fail to search on every keyword

2017-01-13 Thread Itay
Thank you very much. I will check with the server administrator tomorrow. Itay On Fri, 13 Jan 2017, at 21:11, Stuart Raeburn wrote: > Itay, > > > > > Recently, all the searches for resources that I have committed have > > failed. > > > > Your LON-CAPA library server is currently unable to

[LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

2017-01-13 Thread Harding, Gene L
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: [cid:image003.jpg@01D26D87.FB7A6240] I am able to render the integration sign using this code:

Re: [LON-CAPA-users] Algebra Expression Rendering in LON-CAPA

2017-01-13 Thread Gerd Kortemeyer
Hi, It’s \sum as in \sum_{n=1}^{\infty} - Gerd. > On Jan 13, 2017, at 10:29 AM, Harding, Gene L 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