+- HP Forums (https://www.hpmuseum.org/forum)
+-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html)
+--- Forum: HP Prime (/forum-5.html)
+--- Thread: Solving for X (/thread-12265.html)
Solving for X - MullenJohn - 01-25-2019 01:34 AM
Help,
I am trying to solve -3(4x-2.8)= -5(4x-2.8) for x using the HP Prime.
The answer should be X = 0.7.
In CAS mode I entered SOLVE( -3(4x-2.8)= -5(4x-2.8) ) and received
Error: Bad Argument Value.
Would someone please tell me the steps to accomplish the solution with the HP Prime?
Cheers!
RE: Solving for X - mfleming - 01-25-2019 01:59 AM
There is no implicit multiplication, so your entry needs to be
solve (-3*(4*x-2.8)=-5*(4*x-2.8))
Note the lowercase variable usage and the command in lowercase too. Use the Help button too when exploring the commands.
HTH,
~Mark
RE: Solving for X - MullenJohn - 01-25-2019 02:10 AM
Thank you Mark. It works for me now. Cheers!
RE: Solving for X - informach - 01-25-2019 04:16 PM
Hi!, MullenJohn :
Try, in CAS, with ...
RE: Solving for X - MullenJohn - 01-25-2019 05:00 PM
Thank you - very nice - Cheers!