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>> A=rand(3)
a=mean(A,1) %æåå¹³å
b=mean(A,2) %æè¡å¹³å
c=mean(A(:)) %å
¨é¨å¹³å
A =
0.8134 0.8940 0.2876
0.7185 0.9507 0.9264
0.5008 0.4624 0.4963
a =
0.6776 0.7690 0.5701
b =
0.6650
0.8652
0.4865
c =
0.6722