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>> A=rand(3,4)9 P6 F& T$ U1 y" u6 u. l3 U
; @6 e$ @+ s9 {5 i0 b0 cA =* b& z) ?% ]7 k% l2 i" j& N( q9 N! K
# Q! G/ e6 J* \7 X9 t. y8 l, U
0.1818 0.1361 0.5499 0.6221: b$ q7 C4 @6 @/ j( s
0.2638 0.8693 0.1450 0.3510' d# V9 d" `: z/ N/ m& y
0.1455 0.5797 0.8530 0.5132( G/ ^4 s# Y! v' z; I% Q [+ F
[; J9 E: W a) G/ v9 q
>> A(2,: )=[] %删除第2行
& P p+ o- b! ?* E$ C, Q3 k/ H$ z s$ B2 j3 k$ s8 h) C* U
A =
# n( n5 n" \5 ~9 N& X
6 I" |1 o, ^1 p( ]# L& N$ o 0.1818 0.1361 0.5499 0.6221
9 C* V( ]* I+ K n0 i 0.1455 0.5797 0.8530 0.5132 |
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