The \ in $PwrIntegral need to be escaped.
Try:
$PwrIntegral = "p(x) = \\frac{1}{T} \\int_0^T v(x) i(x) dx”;
\\ escapes the left slash and puts a single left slash in.
\ is used to include special characters in a perl string: \n - newline, \r -
carriage return.
It thought \f and \i were special characters.
\\ says make this a real \
Hope this helps!
Mark
> On Mar 29, 2020, at 10:25 PM, Harding, Gene L <glhar...@purdue.edu> wrote:
>
> Hi,
>
> I am having trouble getting equations to render properly. I have done this
> before, and have even tried directly copying code I have used before, but
> cannot get it to display properly.
>
> This is one of the equation definitions:
> $PwrIntegral = "p(x) = \frac{1}{T} \int_0^T v(x) i(x) dx";
>
> This is the radiobuttonresponse code using it:
> <radiobuttonresponse max="10" randomize="yes">
> <foilgroup>
> <foil location="random" value="true" name="foil1">
> <startouttext />
> <m eval="on" display="mathjax">$ $PwrIntegral $</m>
> <endouttext />
> </foil>
> <foil location="random" value="false" name="foil2">
> <startouttext /><m eval="on" display="mathjax">$ $RMSIntegral
> $</m><endouttext />
> </foil>
> <foil location="random" value="false" name="foil3">
> <startouttext /><m eval="on" display="mathjax">$ $AvgIntegral
> $</m><endouttext />
> </foil>
> <foil location="random" value="false" name="foil4">
> <startouttext />bla<endouttext />
> </foil>
> <foil location="random" value="false" name="foil5">
> <startouttext />This is foil Five, and it is currently set to
> "false."<endouttext />
> </foil>
> </foilgroup>
> </radiobuttonresponse>
>
> I can’t send a snip of the display to the listserv, but it looks something
> like this:
> p(x) = rac1Tint0Tv(x)i(x)dx
>
> It responds to the _subscript and ^superscript, but completely ignores the
> \frac and \int commands. I know I must be doing something dumb, but don’t
> know what, and don’t understand why a different expression I pulled from a
> correctly working problem does not work in this one.
>
> If anyone can see what I’m doing wrong, please help. The exam is scheduled
> for first thing Tuesday morning…
>
> Best regards,
>
> Gene L. Harding, PE
> Associate Professor of ECET
> Purdue University
> 574-520-4190
> https://polytechnic.purdue.edu/south-bend/
>
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--
Mark Lucas email:
luc...@ohio.edu
252D Clippinger Lab phone:
(740)597-2984
Department of Physics and Astronomy fax: (740)593-0433
Ohio University
Athens, OH 45701
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