System of inequalities (another error) - Printable Version +- 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: System of inequalities (another error) (/thread-4722.html)

System of inequalities (another error) - Aries - 09-15-2015 11:06 AM Hello everyone, in this simple system of non-linear inequalities, the HP Prime gives the wrong result: SOLVE({7x-x^2>0,x^2-6x-4<0}), it returns 0<x<3+sqrt(13). The right result here is: 0<x<7 ;-) This makes the Prime unreliable in doing such exercises. Best, Aries :-) RE: System of inequalities (another error) - Jean-Michel - 09-15-2015 11:42 AM Hello Aries Just check your maths, it sems your Prime is right. Regards RE: System of inequalities (another error) - Aries - 09-15-2015 12:21 PM Thanks for your precious time, Jean-Michel, I feel bad about all this and please have mercy on me, my eyes played a dirty trick on me :-( Sorry, I'm ashamed :'( Wish you all the best, Aries ;-)