这里是代码:
#线性方程组Ax=b和求逆
A <- matrix(2:10,nrow=3)
A
solve(A)
b=1:3 #求线性方程组的解
solve(A,b)
#为何这里总是给我报错
以下为运行结果:
`
#线性方程组Ax=b和求逆
A <- matrix(2:10,nrow=3)
A
[,1] [,2] [,3]
[1,] 2 5 8
[2,] 3 6 9
[3,] 4 7 10
solve(A)
Error in solve.default(A) :
Lapack routine dgesv: system is exactly singular: U[3,3] = 0
b=1:3 #求线性方程组的解
solve(A,b)
Error in solve.default(A, b) :
Lapack routine dgesv: system is exactly singular: U[3,3] = 0`