hanglieshi.m

牛顿迭代法

syms x a b c d;
A=[x+11.2-36.7*a -0.55 0.57 -2.4;
-1.18 x+0.0195+3.88*b -2.01 9.97;
-1 0 x 0;
0 -1 0 x];
det(A)