新人求带，计算一个方程组

xiaoge603

A = {{-2 (1 - a) - a,
1 P0 _7 H5 I3 ]) H4 I# \5 j   0, -(1 - a) Derivative[1][c][r] -
, U% b) {6 P7 D6 H6 q1 {7 |+ P    a Derivative[1][c][r], (1 - a) (-x - y) +
; H( ]: j# O8 B    a (-x - y)}, {0, -2 (1 - a), -(1 - a) Derivative[1][c][
     r], -a (-a b + t)}, {-(1 - a) Derivative[1][c][r] -
1 a/ F+ u3 p: E; H& n* @    a Derivative[1][c][r], -(1 - a) Derivative[1][c][
     r], (1 - a) (-x (c^\[Prime]\[Prime])[r] -
' M! _+ |# B5 z( |: c# B: T, @       y (c^\[Prime]\[Prime])[r] - (p^\[Prime]\[Prime])[r]) +
' f9 |8 c0 ?+ I1 s- X4 q( l    a ((-Q - y) (c^\[Prime]\[Prime])[r] -
       n (p^\[Prime]\[Prime])[r]), -a Derivative[1][p][r]}, {A - c -
    n x - n y - n (x + y), A - a b - c - t - n x - n y - n (x + y), 0,
7 T0 K. ^3 n0 P" Q! Z0 F$ f    x (-x - y) + (-x - y) y}}; B = {0, (-1 + a - a n) K, 0, -x K}
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

* ?7 T; J4 b# @& Z, `& h7 L" q

数学中国YY主管

程序有错误吧