in maple 11, i have two problems with simplification of powers of "negative" variables.

 

problem i: A^(1/2) *A^2 <> A^(-3/2)*A^4

the two following expressions should be equal but differ by a minus sign:

 

i do:

int(ln(k3+r)/r^2,r);

i get:

either 1/k3*ln(r)-ln(k3+r)*(k3+r)/k3/r

or 1/k3*ln(-r)-ln(k3+r)*(k3+r)/k3/r

the expected behaviour would be to always get the absolute value inside the ln

kernel shutsdown when memory usage reaches 1.8 GB i tried the following combinations: maple 10.06 on amd 3500 3GB XP maple 11.00 on amd 3500 3GB XP maple 11.00 on dual xeon 4GB XP maple 11.00 on quad xeon 8GB XP 64-bit in version 10.06 maple terminates with memory allocation error in version 11.00 the mserver process terminates without notification the problem consistently occurs at a memory usage of approx. 1.8 GB i am using GRTENSOR however the bug occurs in pure maple computations, specifically with the SIMPLIFY command any idea?