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% x# e6 ?6 v6 T* Z>> A=rand(3)
: f6 ] ?) i( U* ha=mean(A,1) %按列平均( B. y" R# p7 P# R+ `3 x
b=mean(A,2) %按行平均
. y/ r7 h2 y. f# G( Q- e3 n( Wc=mean(A(:)) %全部平均
2 e9 _% a0 v6 c% C# ?A =
) N1 k9 g3 ~7 F8 d$ n6 B# o0.8134 0.8940 0.28761 t. c& g: X1 u; N
0.7185 0.9507 0.92647 ~. M, f9 e& E J4 F( _* c& T3 k
0.5008 0.4624 0.4963, k1 l4 f* x1 i, W
a =0 U3 W: T$ q/ E
0.6776 0.7690 0.5701
4 O( k% f9 A4 i- Y" S/ hb =# I' |1 `2 [: P* P+ G
0.6650
8 d/ f9 n( i% c$ ?2 ]0.8652
3 f5 N) f7 }% t3 O, J: q0.4865
: S0 k* `. w* ac =
0 O+ k1 l. H) k7 L3 p0 C6 E0.6722
$ `( p9 ^! A) ?>> |
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