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# matlabutb

a guest Nov 21st, 2019 94 Never
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1. 1)
2.
3. A=[3 7 15; 2 4 7;7 -2 9]
4. B=[19; 11; 13]
5. x = A\B
6. v1 = [5 3 7 8 11 13 9 17 4 2]
7. v2 = round(rand(10,1)*16+3)
8. vs=v1.*v2'
9. ss=dot(v1,v2')
10. v3 = [v1 v2']
11. v3(3:11)
12. v3(4:end)
13. v3([2 7 12])
14. M=diag(v1)
15. det(M)
16. trace(M)
17.
18. ------------------------------------------
19. 2)
20. subplot(2,1,1);
21. x=10:10:1000;
22. y=3*log(x);
23. plot(x,y,'--r')
24. xlabel('Osa x')
25. ylabel('Osa y')
26. title('Prubeh funkce y=3ln(x)')
27. grid on
28. legend('y')
29. subplot(2,1,2);
30. [x,y]=meshgrid([-3.1:0.1:3.1]);
31. z=3*sin(2*x.*y)-2*cos(3*x.*y);
32. plot3(x,y,z)
33. colormap autumn
34. view(-65,35)
35. grid off
36. -------------------------------------------------------
37. 3)
38. h=get(handles.listbox1,'Value');
39. r=str2num(get(handles.edit1,'String'))
40. v=str2num(get(handles.edit2,'String'))
41.
42. switch h
43.
44. case 1
45. o=2*pi*r;
46. q1='Obvod kružnice je:'
47. q2=num2str(o)
48.
49. case 2
50. o=pi*r.^2;
51. q1= 'Obsah kruhu je:'
52. q2=num2str(o)
53.
54. case 3
55. o=pi*(r.^2)*v
56. q1='Objem valce je:'
57. q2=num2str(o)
58.
59. otherwise
60. o=1;
61. q1='Chyba je'
62. q2=num2str(0)
63.
64. end
65. set(handles.text3,'String',q1)
66. set(hanldes.edit3,'String',q2)
67.
68. push button
69. clear all
70. clc
71. close
72.
73. --------------------------------------------------
74. 2.
75. figure
76.
77. subplot(2, 1, 1);
78. x = 10:1:1000;
79. y = 3.*log(x)
80. semilogx(x,y, '--r')
81. grid on
82. xlabel('osa x');
83. ylabel('osa y');
84. title('Prubeh funkce y = 3ln(x)');
85. legend('y')
86.
87. subplot(2, 1, 2);
88. [x2, y2] = meshgrid(-3.1:0.1:3.1);
89. z = 3.*sin(2*x2*y2) - 2.*cos(3*x2*y2)
90. mesh(x2, y2, z)
91. colormap autumn
92. view(-65, 35)
93. grid off
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