Decimal problem using solve

08262018, 02:57 AM
Post: #1




Decimal problem using solve
(Brazilian here, sorry if my English is bad)
I was trying to use the solve function to do my homework and I noticed something really weird: I was solving this equation 70/(23000+z)=x*177.35+(1x)*1.133 (23000+z)*(x*2571.11+(1x)*696.21)=23000*104.91+z*2779.65 on my calculator and for some reason I received {} as my answer. So I turned my computer on and typed the same equation on HP Prime Virtual Calculator and I got the right answer. The fact that my calculator didn't solve this really annoyed me, so I tried to change a few things (reducing a few terms, calculating partial results) and found out that if I changed (x*2571.11) and (x*177.35) to (x*257111/100) and (x*17735/100) and kept everything else (I could change other things but this was enought) the way it was in the first place, I would get my result. At first sight I thought it could have something to do with decimal numbers multiplying the variables, but I didn't have to change (z*2779.65) nor (x*696.21), so I gave up trying to figure it out on my own. Does anyone know if the solve function has problems with decimal numbers or something like that? Thanks in advance, Vitor. 

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Messages In This Thread 
Decimal problem using solve  vterez  08262018 02:57 AM
RE: Decimal problem using solve  Aries  08262018, 07:27 AM
RE: Decimal problem using solve  vterez  08262018, 07:48 AM
RE: Decimal problem using solve  DrD  08262018, 10:02 AM
RE: Decimal problem using solve  vterez  08272018, 03:14 AM
RE: Decimal problem using solve  Albert Chan  08262018, 07:22 PM
RE: Decimal problem using solve  vterez  08272018, 03:27 AM
RE: Decimal problem using solve  Albert Chan  08282018, 08:19 AM
RE: Decimal problem using solve  Albert Chan  08272018, 04:20 AM
RE: Decimal problem using solve  Tim Wessman  08272018, 04:55 AM
RE: Decimal problem using solve  vterez  09032018, 02:34 AM

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