Summation bug? (HP49G, 50g)

01132015, 09:54 PM
Post: #4




RE: Summation bug? (HP49G, 50g)
Apparently, the summation is done in "approx" mode even with the calculator in exact mode, so the exponents of x as well as the constants after the summation are real numbers, then the CAS is unable to simplify x^N/x.
Manually editing the result of SUM to change all reals into integers then EVAL in exact mode will finally get rid of the spurious x in the denominator. I don't know if SUM is supposed to do this or not, but it's certainly an unexpected behavior, not very userfriendly. Claudio 

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Messages In This Thread 
Summation bug? (HP49G, 50g)  Gerson W. Barbosa  01132015, 07:06 PM
RE: Summation bug? (HP49G, 50g)  Thomas Klemm  01132015, 09:25 PM
RE: Summation bug? (HP49G, 50g)  Gerson W. Barbosa  01132015, 10:13 PM
RE: Summation bug? (HP49G, 50g)  Claudio L.  01132015, 09:40 PM
RE: Summation bug? (HP49G, 50g)  Claudio L.  01132015 09:54 PM
RE: Summation bug? (HP49G, 50g)  Gerson W. Barbosa  01132015, 10:26 PM
RE: Summation bug? (HP49G, 50g)  Thomas Klemm  01152015, 01:28 AM
RE: Summation bug? (HP49G, 50g)  Gerson W. Barbosa  01152015, 09:37 AM

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