推 Lautreamont:我認為如果A可逆，就可不管，有唯一解 02/27 23:59
→ Lautreamont:另外如果A不可逆，就要看b 02/27 23:59
→ Lautreamont:若b在R(A)中，則無限多解 若不在則無解 02/28 00:00
→ Lautreamont:所以我猜c d 02/28 00:05
What is the relation between the rank r and the dimension of A when the
→ →
number of solutions to Ax = b is (10%)
→
(a) 0 or 1, depending on b.
→
(b) ∞, independing of b.
→
(c) 0 or ∞, depending on b.
→
(d) 1, regardless of b.
煩請高手解釋一下這題要怎麼解
不太懂意思
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