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Running problem in DSolve

• To: mathgroup at smc.vnet.net
• Subject: [mg132155] Running problem in DSolve
• From: saha18swarup at gmail.com
• Date: Sun, 5 Jan 2014 05:27:05 -0500 (EST)
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Dear Expert,
I have some problem running Mathematica  and it is taking too much time. Can you help me?

Regards 
Swarup

eqns = {AA'[x] + I*b*EE[x] + c*CC[x] + d*AA[x] == 0,
  BB'[x] - a*CC[x] + I*b*FF[x] - c*DD[x] + d*BB[x] == 0,
  CC'[x] + a*BB[x] + I*b*GG[x] + c*AA[x] + d*CC[x] == 0,
  DD'[x] + I*b*HH[x] - c*BB[x] + d*DD[x] == 0,
  EE'[x] + I*b*AA[x] - c*GG[x] - I*e*BB[x] + d*EE[x] == 0,
  FF'[x] - a*GG[x] + I*b*BB[x] + c*HH[x] - I*e*AA[x] + d*FF[x] == 0,
  GG'[x] + a*FF[x] + I*b*CC[x] - c*EE[x] - I*e*DD[x] + d*GG[x] == 0,
  HH'[x] + I*b*DD[x] + c*FF[x] - I*e*CC[x] + d*HH[x] == 0}

ic = {AA[0] == 1, BB[0] == 0, CC[0] == 0, DD[0] == 0, EE[0] == 1,
  FF[0] == 0, GG[0] == 0, HH[0] == 0}

DSolve[{eqns, ic}, {AA, BB, CC, DD, EE, FF, GG, HH}, x]

• Follow-Ups:
  • Re: Running problem in DSolve
    • From: Zhu Sha Zang <zhushazang@gmail.com>