推 john97611017:第一題題目是不是打錯有兩個if怪不順的 02/28 21:51
→ love5566188:題目是兩個if沒錯,我也覺得怪怪的 02/28 21:57
→ love5566188:沒人來糾正我的觀念>"< 02/29 20:09
推 rainywind23:第四題錯，矩陣作列運算並不會改變相依性 03/01 02:26
這幾天補強我的線代觀念,作考古題時還是不太確定
手邊沒有解答想請問一下高手幾題
1.If V is a nonzero finite-dimensional vector spaces, and if every set of p
elements in V.
我覺得True對嗎?
2.If Aand B are square and invertible, then AB is invertible, and
(AB)^-1 = A^-1 * B^-1 fails to span V ,then dim V > p.
請問這題後面的p是代表甚麼?
True對嗎?
^ (抱歉符號不太會用)
3.A least-square solution of Ax=b is a vector x such that
^
||b-Ax|| <= ||b-Ax|| for all x in R^n.
False? 後面的不等式應該改 > 對不對
4.Row operations on a matrix A can change the linear depedence relations
among the rows of A.
True?列運算可以改變線性相依的列對不對
考到現在發現我線代超弱完了= =
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 175.98.50.200