→ iyenn:b與B的行向量相依才會有解,覺得是對的耶xd 10/21 13:23
※ 引述《iyenn (曉風)》之銘言:
: ※ 引述《huskybaby (哈士奇)》之銘言:
: : which of the following questions are TRUE or FALSE?Why?
: : (1)When the optimal solution of a LP model is over determined, it means at least one of the constraints is redundant and vice versa.
: : (2)the system BX=b has infinity of solutions if B is singular, and b is dependent relative to the vectors of B.
: : 這兩題不太懂在問什麼,有人會解這兩小題嗎?
: 若B是奇異矩陣and b與B之向量為線性相關,則x有無限多解,T/F
: ans:T
: B非奇異矩陣
: 則可能有無解or無限組多解
: rank(B|b)=rank(B)=m
: rank(B|b)=/=rank(B)則無解
可是我講義的解答寫
ans:F
應是b與B inverse相關。
所以到底是誰對阿?不太懂這個解答的意思。
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