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q1 = q0/m1*d1/(d1 + d2)
q2 = q0/m2*d2/(d1 + d2)
tc0 = sp*(
  d1 + d2)/q0 + c0*(d1 + d2) + q1*h0/2*((m1 - 1) - (m1 - 2)*
      d1/(d1*p/(d1 + d2))) + q2*h0/2*((m2 - 1) - (m2 - 2)*d2/(d2*
    p/(d1 + d2))) + (s01 + s1)*d1/q1 + q1*h1/2 + (s02 + s2)*d2/q2 + q2*h2/2
tc1 = d1*c
tc2 = d2*c
tc = tc0 + tc1 + tc2
D[tc, q0]
Solve[D[tc, q0] == 0, q0]
4Â¥2010-01-17 21:59:57
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