Re: Combine sqrts in denominator

*To*: mathgroup at smc.vnet.net*Subject*: [mg122419] Re: Combine sqrts in denominator*From*: DrMajorBob <btreat1 at austin.rr.com>*Date*: Fri, 28 Oct 2011 05:33:44 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*References*: <201110271032.GAA08881@smc.vnet.net>*Reply-to*: drmajorbob at yahoo.com

FullSimplify[ 1/Sqrt[-h + Sqrt[h^2 + r^2]]*1/Sqrt[h + Sqrt[h^2 + r^2]], {r > 0, h \[Element] Reals}] 1/r Bobby On Thu, 27 Oct 2011 05:32:01 -0500, Tom D <tomdickens at att.net> wrote: > I'm doing a calculation that results in terms of the form > > 1/ Sqrt[ -h + Sqrt[h^2 + r^2]] * 1/Sqrt[h + Sqrt[h^2 + r^2]] * (other > functions) > > One sees that this simplifies to (other functions)/r. > > It would helpful to make Mathematica perform this simplification, but > I have not been able to get Simplify[] or FullSimplify[] or anything > else to do it. > > How would I be able to do this? > > Thanks, > Tom > -- DrMajorBob at yahoo.com

**References**:**Combine sqrts in denominator***From:*Tom D <tomdickens@att.net>