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Question: maple hangs when using inert multiplication in RHS of applyrule

Question:maple hangs when using inert multiplication in RHS of applyrule

nm 9934 Maple 2024
substitution applyrule
September 10 2024
1

I wanted to change  eq:= 1/2 * sqrt(-2*lambda)  to 1/2 %* sqrt(-2*lambda)  using a rule.

It works outside of rule ofcourse. But when I put %* in the RHS of the rule, maple hangs. It seems it is going into infinite loop.

I tried the trick of using '%*' but this gives syntax error.

Same problem happens when using %. and not just %*

Is there a workaround?

Attached worksheet. Make sure to save all work before trying it.
 

> 

interface(version);

`Standard Worksheet Interface, Maple 2024.1, Windows 10, June 25 2024 Build ID 1835466`

> 

Physics:-Version()

`The "Physics Updates" version in the MapleCloud is 1804. The version installed in this computer is 1802 created 2024, September 3, 11:35 hours Pacific Time, found in the directory C:\Users\Owner\maple\toolbox\2024\Physics Updates\lib\`

> 

libname;

"C:\Users\Owner\maple\toolbox\2024\Physics Updates\lib", "C:\Program Files\Maple 2024\lib"

> 

restart;
> 

eq:= 1/2 * sqrt(-2*lambda)

(1/2)*(-2*lambda)^(1/2)

> 

eq:= 1/2 %. sqrt(-2*lambda); #no problem

`%.`(1/2, (-2*lambda)^(1/2))

> 

eq:= 1/2 %* sqrt(-2*lambda); #no problem

`%*`(1/2, (-2*lambda)^(1/2))

> 

restart;
> 

eq:= 1/2 * sqrt(-2*lambda)

(1/2)*(-2*lambda)^(1/2)

> 

applyrule(sqrt(x::anything)/y::anything = 1/y %. sqrt(x),eq); #why this hangs?

> 

 

> 

restart;
> 

eq:= 1/2 * sqrt(-2*lambda)

(1/2)*(-2*lambda)^(1/2)

> 

applyrule(sqrt(x::anything)/y::anything = 1/y %* sqrt(x),eq); #why this hangs?
> 

 


 

Download maples_hangs_applyrule_sept_10_2024.mw
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