实用标准文案精彩文档2.12MATLAB语言的数值运算-实训2.12.1实训目的1.学会矩阵的建立方法及其矩阵的转置、相乘、求逆等运算；2.识别了解特殊矩阵；3.学会求解方程与方程组；4.学会通过编程解决一些实际问题；2.12.2实训内容1.矩阵建立及其运算]4321012345[1A0.19.08.07.06.05.04.03.02.01.02A]0.19.08.07.06.05.04.03.02.01.0[3A][40.19.08.07.06.05.04.03.02.01.0eeeeeeeeeeA]2222222222[50.19.08.07.06.05.04.03.02.01.0A求（1）211AAD（2）232AAD（3）4/.13AD（4）5*.44AAD（5）5*35AD（6）)2(.^16AD>>A1=-5:4;>>A2=0.1:0.1:1.0;>>A3=sqrt(A2);>>A4=exp(A2);>>A5=2.^(A2);>>formatbank>>D1=A1+A2D1=-4.90-3.80-2.70-1.60-0.500.601.702.803.905.00>>D2=A3-A2D2=0.220.250.250.230.210.170.140.090.050>>D3=1./A4D3=0.900.820.740.670.610.550.500.450.410.37>>D4=A4.*A5实用标准文案精彩文档D4=1.181.401.661.972.332.763.273.874.595.44>>D5=3*A5D5=3.223.453.693.964.244.554.875.225.606.00>>D6=A1.^2D6=25.0016.009.004.001.0001.004.009.0016.002.建立矩阵1418712106114231359152345686420B（1）矩阵B的逆矩阵)(invB（2）矩阵B对应的行列式)det(B>>B=[0:2:8;-6:-2;15,9,5,13,3;2,4,11,6,10;12,7,8,1,14]B=02.004.006.008.00-6.00-5.00-4.00-3.00-2.0015.009.005.0013.003.002.004.0011.006.0010.0012.007.008.001.0014.00>>inv(B)ans=-0.180.290.110.070.070.31-0.72-0.20-0.23-0.07-0.210.110.030.21-0.020.050.110.080.02-0.040.120.04-0.02-0.060.06>>det(B)ans=-17568.00（3）利用矩阵元素的提取方法建立以下矩阵①矩阵b01:矩阵B的3～4行元素；②矩阵b02:矩阵B的2～5列元素；③矩阵b03:由矩阵B的1～3行2～4列交叉点所对应的元素组成；>>B=[0:2:8;-6:-2;15,9,5,13,3;2,4,11,6,10;12,7,8,1,14];>>b01=B(3:4,:)b01=15.009.005.0013.003.002.004.0011.006.0010.00实用标准文案精彩文档>>b02=B(:,2:5)b02=2.004.006.008.00-5.00-4.00-3.00-2.009.005.0013.003.004.0011.006.0010.007.008.001.0014.00>>b03=B(1:3,2:4)b03=2.004.006.00-5.00-4.00-3.009.005.0013.003.矩阵的转置与翻转已知矩阵151413121110987654321m,求取以下矩阵观察并记录。(1)m1=rot90(m,1)（2）m2=rot90(m,2)（3）m3=rot90(m,-1)（4）m4=fliplr(m)（5）m5=flipud(m)(6)求矩阵m的转置矩阵>>m=[1:5;6:10;11:15]m=1.002.003.004.005.006.007.008.009.0010.0011.0012.0013.0014.0015.00>>m1=rot90(m,1)m1=5.0010.0015.004.009.0014.003.008.0013.002.007.0012.001.006.0011.00>>m2=rot90(m,2)m2=15.0014.0013.0012.0011.0010.009.008.007.006.005.004.003.002.001.00>>m3=rot90(m,-1)m3=11.006.001.0012.007.002.00实用标准文案精彩文档13.008.003.0014.009.004.0015.0010.005.00>>m4=fliplr(m)m4=5.004.003.002.001.0010.009.008.007.006.0015.0014.0013.0012.0011.00>>m5=flipud(m)m5=11.0012.0013.0014.0015.006.007.008.009.0010.001.002.003.004.005.00>>m'ans=1.006.0011.002.007.0012.003.008.0013.004.009.0014.005.0010.0015.004.基本矩阵运算(1)创建数值矩阵①在命令窗口按照表2-5中从左到右顺序依次执行相关命令，将结果记录在表2-5中。表2-5指令a=[123;456;789]a(3,2)a(:,1)a(1:2,2:3)结果1.002.003.004.005.006.007.008.009.008.001.04.007.002.003.005.006.00>>a=[123;456;789]a=1.002.003.004.005.006.007.008.009.00>>a(3,2)ans=8.00>>a(:,1)ans=1.004.007.00>>a(1:2,2:3)ans=2.003.005.006.00②在命令窗口按照表2-6中从左到右顺序依次执行相关命令，将结果记录在表2-6中。表2-6指令t=0:5u=0:0.5:4b=[11+2i;3+4i3]结果01234500.511.522.533.541.001.00+2.00i实用标准文案精彩文档3.00+4.00i3.00>>t=0:5t=01.002.003.004.005.00>>t=0:0.5:4t=00.501.001.502.002.503.003.504.00>>formatshort>>b=[11+2i;3+4i3]b=1.00001.0000+2.0000i3.0000+4.0000i3.0000(2)按表2-7要求创建并观察记录特殊矩阵，将结果记于表2-7中。表2-7备注全1矩阵全0矩阵单位矩阵魔术矩阵均匀分布随机矩阵指令a1=ones(3,4...
