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1、练习1基础练习一、矩阵及数组操作：1．利用基本矩阵产生3×3和15×8的单位矩阵、全1矩阵、全0矩阵、均匀分布随机矩阵（[-1，1]之间）、正态分布矩阵（均值为1，方差为4）。（1）eye(3),eye(15,8)ans=100010001ans=10000000010000000010000000010000000010000000010058000000100000000100000000000000000000000000000000000000000000000000000000（2）ones(3),
2、ones(15,8)ans=111111111ans=11111111581111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111（3）zeros(3),zeros(15,8)ans=00000000058ans=000000000000000000000000000000000000000000000000000000000000000000
3、000000000000000000000000000000000000000000000000000000（4）unifrnd(-1,1,3,3),unifrnd(-1,1,15,8)ans=580.9003-0.0280-0.0871-0.53770.7826-0.96300.21370.52420.6428ans=-0.1106-0.72220.3443-0.69830.0682-0.65410.9767-0.07780.2309-0.59450.67620.39580.45420.95950.1656
4、0.13570.5839-0.6026-0.9607-0.2433-0.3814-0.4571-0.15300.58840.84360.20760.36260.72000.6770-0.49530.0310-0.88160.4764-0.4556-0.24100.70730.13610.7515-0.33210.2057-0.6475-0.60240.66360.1871-0.25920.4746-0.1342-0.8995-0.1886-0.96950.0056-0.00690.4055-0.7270-0.
5、5481-0.16930.87090.49360.41890.79950.0931-0.9765580.1596-0.39000.8338-0.1098-0.14220.6433-0.11020.78780.52070.7487-0.17950.8636-0.39080.28980.3891-0.60170.0596-0.97000.7873-0.0680-0.62070.63590.2426-0.40260.28110.5359-0.8842-0.1627-0.61310.32050.58960.3229-
6、0.58190.9417-0.29430.69240.3644-0.31610.9137-0.4312-0.24040.98020.62630.0503-0.3945-0.42050.0452-0.06160.56670.5777-0.9803-0.59470.0833-0.31760.7603-0.87040.3617-0.1227（5）normrnd(1,2,3,3),normrnd(1,2,15,8)ans=2.61153.67923.27611.46331.5790-0.3683-0.97953.95
7、78-1.583958ans=0.85410.70074.1859-1.7146-1.23240.77360.49764.72680.33880.13053.0368-1.04522.27051.75841.9603-0.0451-0.68730.8413-2.16083.0757-0.20282.88842.33631.20681.99554.07030.84270.22042.1024-3.24090.8434-0.61533.9770-0.2130-0.3633-1.7625-1.1997-0.2894
8、2.77832.3609-0.0930-1.6947-1.04911.63111.1720-0.40865.6186-3.7292-0.69351.9388-1.46874.1065-3.0091-1.03632.04932.98020.5073-0.80711.57762.41580.01380.63580.97641.43782.32601.07180.14144.91481.92414.042
