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Why is equation set can't solve in Mathematica?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99699] Why is equation set can't solve in Mathematica?
  • From: Weber <a.pengwang at gmail.com>
  • Date: Mon, 11 May 2009 06:26:41 -0400 (EDT)

Hi, all. This problem is annoying
This:

Solve[{yx13b == (-dg sxa yx13a +
    Sqrt[-dg dx1 sxa^2 yx13a + dg px013a sxa^2 yx13a -
     dg hxa sxa^2 yx13a^2 - dg sxa vx13a yx13a^2])/(dg sxa),
  yx13b == (-dx3 sxb + px013b sxb - 2 dg sxb yx13a - Sqrt[
    4 dg sxb (-dg sxb - hxb sxb - vx13b) yx13a^2 + (-dx3 sxb +
       px013b sxb - 2 dg sxb yx13a)^2])/(
   2 (dg sxb + hxb sxb + vx13b))}, {yx13a, yx13b}]

can't solve. Why?


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