Re: Solving this in mathematica?

*To*: mathgroup at smc.vnet.net*Subject*: [mg128069] Re: Solving this in mathematica?*From*: Scott Hemphill <hemphill at hemphills.net>*Date*: Thu, 13 Sep 2012 03:39:04 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net*References*: <k2pc2e$99c$1@smc.vnet.net>*Reply-to*: hemphill at alumni.caltech.edu

Leon <leon.he88 at gmail.com> writes: [snip] > and I am wondering if it is possible to solve the last line such that I have "r" as a function of "beta", satisfying > > Exp[Cbar - beta] Sum[(Pi^x) B[x, r], {x, 1, 1000}] = 1 > > Because ultimately, I would need to integrate a function J[r] over "beta", so if I don't have "r" as a function of "beta", I don't know how to do the integration of J[r]. Since you can write beta == Cbar + Log[Sum[...]] why not do a change of variables and integrate over r instead? Scott -- Scott Hemphill hemphill at alumni.caltech.edu "This isn't flying. This is falling, with style." -- Buzz Lightyear