推 windysoul:利用行列式值不等於0即可 12/17 12:00
→ iyenn:這po過了?= = 12/17 12:31
→ GI9:上一題是不可逆的複數 這題是可逆的實數 12/17 12:56
→ iyenn:喔,看到了XDD 12/17 13:14
[a+b ab 0 0]
[ 1 a+b ab 0]
[ 0 1 a+b ab]
[ 0 0 1 a+b]
=M
Show that if a and b are real numbers , which are not both zero ,
then M is invertible
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