matlab实验一答案详解_免费下载.doc

实验1. MATLAB 运算基础一实验目的二实内容1、（1）Z1=2*sin(85)/(1+exp(2)Z1 = -0.0420（2） x=2 1+2*i;-0.45 5;Z2=1/2*log(x+sqrt(1+x2)Z2 = 0.7114 - 0.0253i 0.8968 + 0.3658i 0.2139 + 0.9343i 1.1541 - 0.0044i（3）a=-3.0:0.1:3.0;z3=(exp(0.3*a)-exp(-0.3*a)/2.*sin(a+0.3)+log(0.3+a)/2)z3 = Columns 1 through 5 0.7388 + 3.1416i 0.7696 + 3.1416i 0.7871 + 3.1416i 0.7913 + 3.1416i 0.7822 + 3.1416i Columns 6 through 10 0.7602 + 3.1416i 0.7254 + 3.1416i 0.6784 + 3.1416i 0.6196 + 3.1416i 0.5496 + 3.1416i Columns 11 through 15 0.4688 + 3.1416i 0.3780 + 3.1416i 0.2775 + 3.1416i 0.1680 + 3.1416i 0.0497 + 3.1416i Columns 16 through 20 -0.0771 + 3.1416i -0.2124 + 3.1416i -0.3566 + 3.1416i -0.5104 + 3.1416i -0.6752 + 3.1416i Columns 21 through 25 -0.8536 + 3.1416i -1.0497 + 3.1416i -1.2701 + 3.1416i -1.5271 + 3.1416i -1.8436 + 3.1416i Columns 26 through 30 -2.2727 + 3.1416i -2.9837 + 3.1416i -37.0245 -3.0017 -2.3085 Columns 31 through 35 -1.8971 -1.5978 -1.3575 -1.1531 -0.9723 Columns 36 through 40 -0.8083 -0.6567 -0.5151 -0.3819 -0.2561 Columns 41 through 45 -0.1374 -0.0255 0.0792 0.1766 0.2663 Columns 46 through 50 0.3478 0.4206 0.4841 0.5379 0.5815 Columns 51 through 55 0.6145 0.6366 0.6474 0.6470 0.6351 Columns 56 through 60 0.6119 0.5777 0.5327 0.4774 0.4126 Column 61 0.3388（4）t=0:0.5:2.5;z4=t.2.*(t=0&t=1&t=2&t A=12 34 -4;34 7 87;3 65 7;B=1 3 -1;2 0 3;3 -2 7;A+6*BA-B+eye(size(A)ans = 18 52 -10 46 7 105 21 53 49ans = 12 31 -3 32 8 84 0 67 1（2） A*BA.*Bans = 68 44 62 309 -72 596 154 -5 241ans = 12 102 4 68 0 261 9 -130 49（3） A3A.3ans = 37226 233824 48604 247370 149188 600766 78688 454142 118820ans = 1728 39304 -64 39304 343 658503 27 274625 343（4） A/BBAans = 16.4000 -13.6000 7.6000 35.8000 -76.2000 50.2000 67.0000 -134.0000 68.0000ans = 109.4000 -131.2000 322.8000 -53.0000 85.0000 -171.0000 -61.6000 89.8000 -186.2000（5） A,BA(1,3,:);B2ans = 12 34 -4 1 3 -1 34 7 87 2 0 3 3 65 7 3 -2 7ans = 12 34 -4 3 65 7 4 5 1 11 0 1920 -5 403（1） A=1 2 3 4 5;6 7 8 9 10;11 12 13 14 15;16 17 18 19 20;21 22 23 24 25B=3 0 16;17 -6 9;0 23 -4;9 7 0;4 13 11C=A*BA = 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25B = 3 0 16 17 -6 9 0 23 -4 9 7 0 4 13 11C = 93 150 77 258 335 237 423 520 397 588 705 557 753 890 717（2） F=size(C)D=C(F(1)-2:F(1),F(2)-1:F(2)F = 5 3D = 520 397 705 557 890 717（3） whos Name Size Bytes Class Attributes A 5x5 200 double B 5x3 120 double C 5x3 120 double D 3x2 48 double E 3x3 72 double F 1x2 16 double H 1x1 8 double Hh 1x1 8 double Hp 1x1 8 double Norm 1x1 8 double O 2x3 48 double P 5x5 200 double R 3x2 48 double Rank 1x1 8 double S 2x2 32 double Th 1x1 8 double Tp 1x1 8 double Trace 1x1 8 double V 3x3 72 double Z1 1x1 8 double Z2 2x2 64 double complex a 1x61 488 double ans 5x3 120 double b 3x1 24 double t 1x6 48 double x 2x2 64 double complex z3 1x