問a爲何值時,線性方程組有惟一解?有無窮多解?並在有解時求出其解（在有無窮多解時,要求用一個特解和導出組的基礎解系表示全

題目：

問a爲何值時,線性方程組有惟一解?有無窮多解?並在有解時求出其解（在有無窮多解時,要求用一個特解和導出組的基礎解系表示全部解）.

解答：

66789時突然有人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人人 ytrrytryu8u8ioolkoyhbtvffdc 梵蒂岡v大