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急！！用matlab求矩阵相乘！

急！！用matlab求矩阵相乘！
我正在完成论文最关键的地方....用matlab做乘法运算说 什么内部定义必须同意，第一次用，不是很明白~ 希望谁帮忙解答，或者帮我完成这个运算吧~~ w=[0.282 0.146 0.075 0.038 0.019,0.148 0.070 0.015 0.032,0.075 0.028 0.006 0.012,0.020 0.020 0.008 0.004] r=[9/20 7/20 4/20 0 0,5/20 8/20 6/20 1/20 0,8/20 7/20 5/20 0 0,10/20 6/20 4/20 0 0,5/20 7/20 6/20 2/20 0,7/20 10/20 3/20 0 0,10/20 9/20 1/20 0 0,3/20 5/20 10/20 1/20 1/20,6/20 8/20 5/20 1/20 0,7/20 8/20 5/20 0 0,8/20 9/20 3/20 0 0,5/20 7/20 8/20 0 0,1/20 2/20 6/20 10/20 1/20,5/20 8/20 7/20 0 0,3/20 6/20 10/20 1/20 0,8/20 9/20 3/20 0 0,6/20 8/20 4/20 1/20 1/20] 求b=w*r

>> w=[0.282 0.146 0.075 0.038 0.019,0.148 0.070 0.015 0.032,0.075 0.028 0.006 0.012,0.020 0.020 0.008 0.004]

w =

Columns 1 through 6

0.2820 0.1460 0.0750 0.0380 0.0190 0.1480

Columns 7 through 12

0.0700 0.0150 0.0320 0.0750 0.0280 0.0060

Columns 13 through 17

0.0120 0.0200 0.0200 0.0080 0.0040

>> r=[9/20 7/20 4/20 0 0,5/20 8/20 6/20 1/20 0,8/20 7/20 5/20 0 0,10/20 6/20 4/20 0 0,5/20 7/20 6/20 2/20 0,7/20 10/20 3/20 0 0,10/20 9/20 1/20 0 0,3/20 5/20 10/20 1/20 1/20,6/20 8/20 5/20 1/20 0,7/20 8/20 5/20 0 0,8/20 9/20 3/20 0 0,5/20 7/20 8/20 0 0,1/20 2/20 6/20 10/20 1/20,5/20 8/20 7/20 0 0,3/20 6/20 10/20 1/20 0,8/20 9/20 3/20 0 0,6/20 8/20 4/20 1/20 1/20]

r =

Columns 1 through 6

0.4500 0.3500 0.2000 0 0 0.2500

Columns 7 through 12

0.4000 0.3000 0.0500 0 0.4000 0.3500

Columns 13 through 18

0.2500 0 0 0.5000 0.3000 0.2000

Columns 19 through 24

0 0 0.2500 0.3500 0.3000 0.1000

Columns 25 through 30

0 0.3500 0.5000 0.1500 0 0

Columns 31 through 36

0.5000 0.4500 0.0500 0 0 0.1500

Columns 37 through 42

0.2500 0.5000 0.0500 0.0500 0.3000 0.4000

Columns 43 through 48

0.2500 0.0500 0 0.3500 0.4000 0.2500

Columns 49 through 54

0 0 0.4000 0.4500 0.1500 0

Columns 55 through 60

0 0.2500 0.3500 0.4000 0 0

Columns 61 through 66

0.0500 0.1000 0.3000 0.5000 0.0500 0.2500

Columns 67 through 72

0.4000 0.3500 0 0 0.1500 0.3000

Columns 73 through 78

0.5000 0.0500 0 0.4000 0.4500 0.1500

Columns 79 through 84

0 0 0.3000 0.4000 0.2000 0.0500

Column 85

0.0500

>> rr=reshape(r,17,5)

rr =

0.4500 0.2000 0 0.4500 0
0.3500 0 0.1500 0.1500 0
0.2000 0 0.2500 0 0.1500
0 0.2500 0.5000 0 0.3000
0 0.3500 0.0500 0.2500 0.5000
0.2500 0.3000 0.0500 0.3500 0.0500
0.4000 0.1000 0.3000 0.4000 0
0.3000 0 0.4000 0 0.4000
0.0500 0.3500 0.2500 0 0.4500
0 0.5000 0.0500 0

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