# User Portlet Xavier Koch
Discussions
Thanks, guy, I got it~
I don't know the internals, so I am just guessing. The constraint myConstraintBB is significantly more complicated than myConstraintAA, and the complexity of the algebraic algorithms increases very very rapidly with the size of the input. I would...
To make more than one assumption I would use And: \$Assumptions = And[a > 0, \[Beta] > 0, d > 0, 1 > b > 0, c > 0, a > \[Tau]*\[Theta]A, \[Tau] > 0, \[Theta]A > \[Theta]B > \[Theta]C, a > \[Tau]*\[Theta]B, a >...
According to the documentation, "Manipulate only "notices " explicit visible parameters:" http://reference.wolfram.com/language/ref/Manipulate.html You've defined the function fb to take one parameter argument, Fc_. The other parameters are not...
Thanks a lot for your help this problem is now fixed!
This is very slow Condition34=Reduce[{(-a+c β+t θ1)^2(6b^2+4b λ+λ^2)/(8b^3)> (3a^2-6a c α+3c^2 α^2+2a(-3+2p)t θ2+2c(3-2p)t α θ2+(3-4p+2p^2)t^2 θ2^2)/(4b), a>c>0,1>p>0,1>t>0,1>b>0,1>λ>0,β>α>1,a>c α,a>c β,0 0, ...
Thank you for catching that. I apologize for my mistake. With the correct equation it doesn't do as well isolating β. Not using Simplify and manually extracting the desired relation for β is perhaps better.