新人求带，计算一个方程组

xiaoge603

A = {{-2 (1 - a) - a,
   0, -(1 - a) Derivative[1][c][r] -
    a Derivative[1][c][r], (1 - a) (-x - y) +
/ C$ L6 ?* \- b! t    a (-x - y)}, {0, -2 (1 - a), -(1 - a) Derivative[1][c][
5 J% }4 E/ x8 [3 ?+ `1 l     r], -a (-a b + t)}, {-(1 - a) Derivative[1][c][r] -
  t, s3 k8 R0 X5 v    a Derivative[1][c][r], -(1 - a) Derivative[1][c][
     r], (1 - a) (-x (c^\[Prime]\[Prime])[r] -
       y (c^\[Prime]\[Prime])[r] - (p^\[Prime]\[Prime])[r]) +
    a ((-Q - y) (c^\[Prime]\[Prime])[r] -
       n (p^\[Prime]\[Prime])[r]), -a Derivative[1][p][r]}, {A - c -
% O7 _, j  N& W& A/ z* L    n x - n y - n (x + y), A - a b - c - t - n x - n y - n (x + y), 0,
    x (-x - y) + (-x - y) y}}; B = {0, (-1 + a - a n) K, 0, -x K}
- i1 ~. v+ [# \7 `LinearSolve[A, B]，为何解不出来。。。。。每次都是显示一些递归深度之类的。。。。求解求解

3 E9 V% |# J; c9 v: v& c

数学中国YY主管

程序有错误吧
/ J+ F1 P7 J! l3 Y7 U+ x