偉大嘅threads友有冇人可以計我計下😭 我諗到嘅思路係用matrix transform 到RREF 再用no. of pivot columns同no. of free variables 嘅關係去搵但係我轉唔到去做RREF😓😓

2025-01-19 01:02

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發文後	用戶	內容
30 分鐘內	^_^ hhhhh__294	Ching 是咪1030份功課熟口熟面咁嘅
一小時內	Dalvin Pang yuhim_0912
3 小時內	Wilson Sir \| 初高中數學補習 \| M2之鬼* ng_sir_daily	Maybe ? (A)=(I) 用row operation 砌到下面 (I)=(A^-1) 好耐冇掂大學數😂
5 小時內	麥先根（Donald） ectipsgroup	Apply several row operations to REF. REF is enough to determine the existence of solutions. Then the system has unique solution iff all diagonal entries in the REF are nonzero. Turn all ≠ in (a) to =, then check for (b) and (c). Add oil :)