A=[6+i,7-2i;4-5i,8+9i;3i,0] A = 6.0000 + 1.0000i 7.0000 - 2.0000i 4.0000 - 5.0000i 8.0000 + 9.0000i 0 + 3.0000i 0 A(3,2)=10 A = 6.0000 + 1.0000i 7.0000 - 2.0000i 4.0000 - 5.0000i 8.0000 + 9.0000i 0 + 3.0000i 10.0000 A(6,3)=20 A = 6.0000 + 1.0000i 7.0000 - 2.0000i 0 4.0000 - 5.0000i 8.0000 + 9.0000i 0 0 + 3.0000i 10.0000 0 0 0 0 0 0 0 0 0 20.0000 A(4:5,:)=[] A = 6.0000 + 1.0000i 7.0000 - 2.0000i 0 4.0000 - 5.0000i 8.0000 + 9.0000i 0 0 + 3.0000i 10.0000 0 0 0 20.0000 size(A) ans = 4 3 A A = 6.0000 + 1.0000i 7.0000 - 2.0000i 0 4.0000 - 5.0000i 8.0000 + 9.0000i 0 0 + 3.0000i 10.0000 0 0 0 20.0000 diag(A) ans = 6.0000 + 1.0000i 8.0000 + 9.0000i 0 A.' ans = 6.0000 + 1.0000i 4.0000 - 5.0000i 0 + 3.0000i 0 7.0000 - 2.0000i 8.0000 + 9.0000i 10.0000 0 0 0 0 20.0000 A.' ans = 6.0000 + 1.0000i 4.0000 - 5.0000i 0 + 3.0000i 0 7.0000 - 2.0000i 8.0000 + 9.0000i 10.0000 0 0 0 0 20.0000 size(A.') ans = 3 4 diag(A.') ans = 6.0000 + 1.0000i 8.0000 + 9.0000i 0 A A = 6.0000 + 1.0000i 7.0000 - 2.0000i 0 4.0000 - 5.0000i 8.0000 + 9.0000i 0 0 + 3.0000i 10.0000 0 0 0 20.0000 A.' ans = 6.0000 + 1.0000i 4.0000 - 5.0000i 0 + 3.0000i 0 7.0000 - 2.0000i 8.0000 + 9.0000i 10.0000 0 0 0 0 20.0000 A' ans = 6.0000 - 1.0000i 4.0000 + 5.0000i 0 - 3.0000i 0 7.0000 + 2.0000i 8.0000 - 9.0000i 10.0000 0 0 0 0 20.0000 B=[1:4;4:-1:1;2:5;9:-2:3] B = 1 2 3 4 4 3 2 1 2 3 4 5 9 7 5 3 B.' ans = 1 4 2 9 2 3 3 7 3 2 4 5 4 1 5 3 B' ans = 1 4 2 9 2 3 3 7 3 2 4 5 4 1 5 3 size(B) ans = 4 4 B(4,:)=[] B = 1 2 3 4 4 3 2 1 2 3 4 5 C=[9:-1:6;8:-1:5;10:-1:7] C = 9 8 7 6 8 7 6 5 10 9 8 7 size(B) ans = 3 4 size(C) ans = 3 4 D=B+C D = 10 10 10 10 12 10 8 6 12 12 12 12 D=C+B D = 10 10 10 10 12 10 8 6 12 12 12 12 E=B-C E = -8 -6 -4 -2 -4 -4 -4 -4 -8 -6 -4 -2 E=-C+B E = -8 -6 -4 -2 -4 -4 -4 -4 -8 -6 -4 -2 E=C-B E = 8 6 4 2 4 4 4 4 8 6 4 2 E=-B+C E = 8 6 4 2 4 4 4 4 8 6 4 2 B*C {??? Error using ==> mtimes Inner matrix dimensions must agree. } B B = 1 2 3 4 4 3 2 1 2 3 4 5 C C = 9 8 7 6 8 7 6 5 10 9 8 7 F=B.*C F = 9 16 21 24 32 21 12 5 20 27 32 35 F=C.*B F = 9 16 21 24 32 21 12 5 20 27 32 35 B B = 1 2 3 4 4 3 2 1 2 3 4 5 C C = 9 8 7 6 8 7 6 5 10 9 8 7 B./C ans = 0.1111 0.2500 0.4286 0.6667 0.5000 0.4286 0.3333 0.2000 0.2000 0.3333 0.5000 0.7143 format rat B./C ans = 1/9 1/4 3/7 2/3 1/2 3/7 1/3 1/5 1/5 1/3 1/2 5/7 C./B ans = 9 4 7/3 3/2 2 7/3 3 5 5 3 2 7/5 format long C./B ans = Columns 1 through 3 9.000000000000000 4.000000000000000 2.333333333333334 2.000000000000000 2.333333333333334 3.000000000000000 5.000000000000000 3.000000000000000 2.000000000000000 Column 4 1.500000000000000 5.000000000000000 1.400000000000000 B./C ans = Columns 1 through 3 0.111111111111111 0.250000000000000 0.428571428571429 0.500000000000000 0.428571428571429 0.333333333333333 0.200000000000000 0.333333333333333 0.500000000000000 Column 4 0.666666666666667 0.200000000000000 0.714285714285714 format bank B./C ans = 0.11 0.25 0.43 0.67 0.50 0.43 0.33 0.20 0.20 0.33 0.50 0.71 format short B./C ans = 0.1111 0.2500 0.4286 0.6667 0.5000 0.4286 0.3333 0.2000 0.2000 0.3333 0.5000 0.7143 format B./C ans = 0.1111 0.2500 0.4286 0.6667 0.5000 0.4286 0.3333 0.2000 0.2000 0.3333 0.5000 0.7143 format rat B B = 1 2 3 4 4 3 2 1 2 3 4 5 C C = 9 8 7 6 8 7 6 5 10 9 8 7 B./C ans = 1/9 1/4 3/7 2/3 1/2 3/7 1/3 1/5 1/5 1/3 1/2 5/7 C.\B ans = 1/9 1/4 3/7 2/3 1/2 3/7 1/3 1/5 1/5 1/3 1/2 5/7 C./B ans = 9 4 7/3 3/2 2 7/3 3 5 5 3 2 7/5 B.\C ans = 9 4 7/3 3/2 2 7/3 3 5 5 3 2 7/5 B B = 1 2 3 4 4 3 2 1 2 3 4 5 B.^2 ans = 1 4 9 16 16 9 4 1 4 9 16 25 B.^3 ans = 1 8 27 64 64 27 8 1 8 27 64 125 format B.^(1/2) ans = 1.0000 1.4142 1.7321 2.0000 2.0000 1.7321 1.4142 1.0000 1.4142 1.7321 2.0000 2.2361 x=[0:0.1:2*pi]; x^2 {??? Error using ==> mpower Inputs must be a scalar and a square matrix. } x.^2 ans = Columns 1 through 7 0 0.0100 0.0400 0.0900 0.1600 0.2500 0.3600 Columns 8 through 14 0.4900 0.6400 0.8100 1.0000 1.2100 1.4400 1.6900 Columns 15 through 21 1.9600 2.2500 2.5600 2.8900 3.2400 3.6100 4.0000 Columns 22 through 28 4.4100 4.8400 5.2900 5.7600 6.2500 6.7600 7.2900 Columns 29 through 35 7.8400 8.4100 9.0000 9.6100 10.2400 10.8900 11.5600 Columns 36 through 42 12.2500 12.9600 13.6900 14.4400 15.2100 16.0000 16.8100 Columns 43 through 49 17.6400 18.4900 19.3600 20.2500 21.1600 22.0900 23.0400 Columns 50 through 56 24.0100 25.0000 26.0100 27.0400 28.0900 29.1600 30.2500 Columns 57 through 63 31.3600 32.4900 33.6400 34.8100 36.0000 37.2100 38.4400 x=[0:0.1:2*pi]; y=sin(x.^2); plot(x,y) A=[1,2;3,4] A = 1 2 3 4 B=[5,6;7,8] B = 5 6 7 8 A.*B ans = 5 12 21 32 A*B ans = 19 22 43 50 B.*A ans = 5 12 21 32 B*A ans = 23 34 31 46 A./B ans = 0.2000 0.3333 0.4286 0.5000 format rat A A = 1 2 3 4 B B = 5 6 7 8 A/B ans = 3 -2 2 -1 B\A ans = 5 4 -4 -3 A\B ans = -3 -4 4 5 B/A ans = -1 2 -2 3 A*A ans = 7 10 15 22 A^2 ans = 7 10 15 22 A./B ans = 1/5 1/3 3/7 1/2 B.\A ans = 1/5 1/3 3/7 1/2 B./A ans = 5 3 7/3 2 A.\B ans = 5 3 7/3 2 format A A = 1 2 3 4 a=[10,20]; a*A ans = 70 100 a.' ans = 10 20 A*a.' ans = 50 110 a a = 10 20 b=[3;4] b = 3 4 a*b ans = 110 b*a ans = 30 60 40 80 C C = 9 8 7 6 8 7 6 5 10 9 8 7 d=[1;2;3;4]; C*d ans = 70 60 80 d*C {??? Error using ==> mtimes Inner matrix dimensions must agree. } d(4)=[] d = 1 2 3 d.'*C ans = 55 49 43 37 V = objem_kv(2,3,5) V = 30 a=[2,1,2,1]; b=[3,1,3,3]; c=[5,3,4,0.5]; V = objem_kv(a,b,c) V = 30.0000 3.0000 24.0000 1.5000 diary off