題目如下:
For the following system of equations,
5x-3y+4z= - 23
-x+2y-8z= 29
4y+7z= - 13
(a) Determine the rank of the coefficient matrix.
(b) Find the inverse of the coefficient matrix.
(c) Find the solution.
以上我算出來的答案是
(a) rank= 3
(b) inverse matrix
[ 46 37 16 ]
[ 7 35 36 ]
[ -4 20 7 ]
(c) solution
x= -11417 / 193
y= 1322 / 193
z= 397 / 193
答案實在太詭異了
尤其是(c)
有沒有人能幫我看看
是我算錯還是答案本來就這樣...
謝謝大家
感激不盡!!