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Message #4 Posted by Valentin Albillo on, 6:27 a.m., I certaily would like to see an HP-15C program that uses the built-in Integrate feature to perform multiple integration. Message #3 Posted by Namir on, 9:04 p.m., Obviously the HP15C can't do any symbolic integrals, and while it might not be able to do triple integrals numerically out of the box, I'm sure such abilities can be programmed.
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No idea what the point of your last line was. Pretty sure the TI89 and HP50g can do multiple integration out of the box, too. Message #2 Posted by Crawl on, 7:49 p.m., Re: Impressive TI NSpire CX CAS Multiple Integration To my surprised, the machine gave me the correct answer in both cases, instead of complaining that it could only do single integration! Very impressive TI! Sorry 15C, you no can do!!! Out of curiosity, I powered up my TI Nspire CX CAS (the newest version) and tried to perform double and triple integrations. Both methods work well, with the nested Simpson method performing better than the Monte Carlo for the same number of function calls. The Monte Carlo method is very easy to program. I have been playing with double and tripLE integration using the Monte Carlo method and with nested Simpson 1/3 rules using Excel VBA. Message #1 Posted by Namir on, 1:59 p.m. Impressive TI NSpire CX CAS Multiple Integration Impressive TI NSpire CX CAS Multiple Integration The Museum of HP Calculators