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Question: A simple subs issue

Question:A simple subs issue

neodynamics 0 Maple 15
substitution subs
June 21 2012
0

I encountered a problem with a simple subs in Maple 15.01:

Q:=1/(a*l);

subs(a*l=t,Q);

This fails to perform the substitution and gives 1/(a*l) instead of 1/t.

However, it seems to work in certain form, for example:

Q:=exp(a*l);

subs(a*l=t,Q);

produces exp(t) correctly.

Furthermore,

Q:=1/(a*l)*exp(a*l);

subs(a*l=t,Q);

gives exp(t)/(a*l). Strangely, the substitution in the exponential is correct but the one in the divisor is not.

Anyone had the same prolem? Is it specific to Maple 15? Any suggestion for an work around?

Thanks a lot!

 
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