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+--- Thread: CAS.lcm with decimals (/thread-10958.html)
CAS.lcm with decimals - proostas - 06-23-2018 09:49 AM
Hello everyone,
I've stumbled upon a strange behaviour of CAS.lcm function in both Home and CAS.
lcm(2.5,2) yields 5 while lcm(5/2,4/2) correctly yields 10.
Got last firmware installed: 2018 02 12 (13441)
Is it a bug or I somehow misconfigured my HP Prime?
RE: CAS.lcm with decimals - parisse - 06-23-2018 03:31 PM
lcm returns the product of its arguments if one of them is an approx number. 2.5 is not the same as 5/2, it represents any real in a small interval around 2.5.
One should not use floats in exact arithmetic CAS instructions.
RE: CAS.lcm with decimals - proostas - 06-23-2018 05:32 PM
Yep. My bad. I see CAS.lcm expects only integers, polynomials, and rationals. I should have learned how to use online help before posting it. Got spoiled by my Classpad II.