matlab实验习题3.docx

1、matlab实验习题3 Matlab实验报告 姓名: 窦慧敏 学号: JV144036 2.4 A=11 12 13 14;21 22 23 24;31 32 33 34;41 42 43 44A = 11 12 13 14 21 22 23 24 31 32 33 34 41 42 43 44 A(:,1)ans = 11 21 31 41 A(2,:)ans = 21 22 23 24 A(:,2:3)ans = 12 13 22 23 32 33 42 43 A(2:3,2:3)ans = 22 23 32 33 A(:,1:2:3)ans = 11 13 21 23 31 33 41

2、43 A(2:3)ans = 21 31 A(:)ans = 11 21 31 41 12 22 32 42 13 23 33 43 14 24 34 44 A(:,:)ans = 11 12 13 14 21 22 23 24 31 32 33 34 41 42 43 44 ones(2,2)ans = 1 1 1 1 eye(2)ans = 1 0 0 1 A,ones(2,2);eye(2)ans = 11 12 13 14 1 1 21 22 23 24 1 1 31 32 33 34 1 0 41 42 43 44 0 1 diag(A)ans = 11 22 33 44 diag(

3、A,1)ans = 12 23 34 diag(A,-1)ans = 21 32 43 diag(A,2)ans = 13 242.6 x=4+8i 3+5i 2-7i 1+4i 7-5i;3+2i 7-6i 9+4i 3-9i 4+4ix = Columns 1 through 2 4.0000 + 8.0000i 3.0000 + 5.0000i 3.0000 + 2.0000i 7.0000 - 6.0000i Columns 3 through 4 2.0000 - 7.0000i 1.0000 + 4.0000i 9.0000 + 4.0000i 3.0000 - 9.0000i C

4、olumn 5 7.0000 - 5.0000i 4.0000 + 4.0000i xans = 4.0000 - 8.0000i 3.0000 - 2.0000i 3.0000 - 5.0000i 7.0000 + 6.0000i 2.0000 + 7.0000i 9.0000 - 4.0000i 1.0000 - 4.0000i 3.0000 + 9.0000i 7.0000 + 5.0000i 4.0000 - 4.0000i2.9 A=4 9 2;7 6 4;3 5 7A = 4 9 2 7 6 4 3 5 7 B=37;26;28B = 37 26 28 ABans = -0.511

5、8 4.0427 1.33182.10 a=1 2 3;4 5 6;7 8 9a = 1 2 3 4 5 6 7 8 9 a*aans = 30 36 42 66 81 96 102 126 150 a.*aans = 1 4 9 16 25 36 49 64 812.11 A=2 7 6;9 0 -10;3 0.5 6A = 2.0000 7.0000 6.0000 9.0000 0 -10.0000 3.0000 0.5000 6.0000 B=2 0.2 0;3 2 5;4 0.5 7B = 2.0000 0.2000 0 3.0000 2.0000 5.0000 4.0000 0.50

6、00 7.0000 A|Bans = 1 1 1 1 1 1 1 1 1 A&Bans = 1 1 0 1 0 1 1 1 1 AB? AB |Error: Unexpected MATLAB operator. ABans = 0 1 1 1 0 0 0 0 0 A=Bans = 1 1 1 1 0 0 0 1 0 A A A=Bans = 1 0 0 0 0 0 0 1 0 A=Bans = 0 1 1 1 1 1 1 0 1 A(5)ans = 0 B(3)ans = 4 B(7)ans = 0 A()6ans = 0 1 0 1 0 0 0 0 0 B()6ans = 0 0 0 0

7、0 0 0 0 12.122.15 b=cell(2)b = b(1,1)=北京b = 北京 b1,2=上海b = 北京 上海 b(2,1)=5b = 北京 上海 5 b(2,1)=5b = 北京 上海 5 b2,2=5 9;6 2b = 北京 上海 5 2x2 double2.16 a=4 2;7 5a = 4 2 7 5 b=7 1;8 3b = 7 1 8 3 c=5 9;6 2c = 5 9 6 2 d=cat(1,a,b,c)d = 4 2 7 5 7 1 8 3 5 9 6 2 d=cat(1,a,b)d = 4 2 7 5 7 1 8 3 d=a(:);b(:);c(:)d = 4 7 2 5 7 8 1 3 5 6 9 2 d=a(:);b(:);c(:)d = 4 7 2 5 7 8 1 3 5 6 9 2 d=reshape(d,4,3)d = 4 7 5 7 8 6 2 1 9 5 3 2 d=a(:);b(:);c(:)d = 4 7 2 5 7 8 1 3 5 6 9 2 d.ans = Columns 1 through 11 4 7 2 5 7 8 1 3 5 6 9 Column 12 2