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Question: small new issue with Physics:-Latex

Question:small new issue with Physics:-Latex

nm 8552 Maple 2020
physics latex
September 10 2020
2

Using latest Physics, I found case where it is not giving the Latex.

Please see attached worksheet.  This is on windows 10, Maple 2020.1.1

 

> 

restart;
> 

interface(version);

`Standard Worksheet Interface, Maple 2020.1, Windows 10, July 30 2020 Build ID 1482634`

> 

Physics:-Version()

`The "Physics Updates" version in the MapleCloud is 804 and is the same as the version installed in this computer, created 2020, September 7, 12:31 hours Pacific Time.`

> 

ode:=diff(y(t),t) = -2*arctan(y(t))/(1+y(t)^2);

diff(y(t), t) = -2*arctan(y(t))/(1+y(t)^2)

> 

sol:=dsolve(ode)

t+Intat((1/2)*(_a^2+1)/arctan(_a), _a = y(t))+_C1 = 0

> 

Physics:-Latex(sol)

Error, (in unknown) invalid range for string subscript

> 

latex(sol)

t+\int ^{y \left( t \right) }\!{\frac {{{\it \_a}}^{2}+1}{2\,\arctan
 \left( {\it \_a} \right) }}{d{\it \_a}}+{\it \_C1}=0

> 

 


By trial and error, I found that the error was introduced in Physics 797. Since in Physics 796 it did work.

Here is screen shot

Download latex_issue_11.mw
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