it-labs/ТЕМА1/lab1_otchet.md at 27fa2e07de3ab03cccade069268dc12925d311c7

main/it-labs

Форкнуть 48

Files

YershovaVA 27fa2e07de otchetmd

2026-02-11 21:32:10 +03:00

11 KiB

Исходник Ответственный История

# Отчет по теме 1

Ершова Вероника, А-03-24

## 1 Изучение среды GNU Octave

## 2 Настройка текущего каталога

Нажал на окно рядом с *Текущая папка:* и установил путь к папке ТЕМА1:

<<<<<<< HEAD ![Скриншот выбора текущей папки](ТЕМА1/images/ch_file.png)

======= ![Скриншот выбора текущей папки](http://uit.mpei.ru/git/YershovaVA/it-labs/src/branch/main/%D0%A2%D0%95%D0%9C%D0%901/ch_file.PNG)

946244ad63

## 3 Изучение интерфейса

![Скриншот интерфейса](ТЕМА1/images/image_interface.png)

## 4 Установка пути к папкам ТЕМА1 и ТЕМА2

![Скриншот установки](ТЕМА1/images/put_file.png)

## 5 Изучение работы с системой помощи

![Скриншот справки](ТЕМА1/images/documentation.png)

## 6 Создание матриц и векторов


>> A=randn(4,6)

A =



&nbsp; -0.3123   0.2623  -0.5659   0.8583  -0.5970   0.9411

&nbsp; -0.3970   0.8236   0.6951   0.6303  -0.7044  -1.7374

&nbsp; -1.0984   0.5386  -0.2843  -0.3507  -0.5547  -1.9063

&nbsp;  0.1025   1.1803  -0.4632   0.4787   0.9092  -0.6363

B=rand(4,7)

B =

0.644835 0.573813 0.875185 0.901622 0.128847 0.962663 0.245441

0.822337 0.515764 0.478145 0.540383 0.080948 0.520514 0.075695

0.893529 0.350316 0.940080 0.651110 0.694296 0.249719 0.568012

0.404731 0.782888 0.760890 0.166651 0.586766 0.664987 0.086867

C = 4:27

C =

4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

H='This is a symbols vector

L=[-2+23.1j, 3-5.6j]

L =

-2.0000 + 23.1000i 3.0000 - 5.6000i

## 7 Преобразования матриц

D = reshape(C, [], 6)

D =

4 8 12 16 20 24

5 9 13 17 21 25

6 10 14 18 22 26

7 11 15 19 23 27

E=B'*A

E =

-1.467808 1.805345 -0.234815 0.952120 -1.091901 -2.782730

-0.688507 1.687984 -0.428432 1.069487 -0.188416 -1.522026

-1.417751 2.027711 -0.782629 1.087059 -0.688963 -2.283294

-1.194195 1.228917 -0.396936 0.965854 -1.128588 -1.437582

-0.774871 1.166932 -0.485822 0.198993 0.014438 -1.716256

-0.713412 1.600553 -0.561983 1.385063 -0.475313 -0.897539

-0.721710 0.535160 -0.288015 0.100733 -0.435934 -1.038587

F=[A,B]

F =

Columns 1 through 12:

-0.312294 0.262288 -0.565932 0.858280 -0.597024 0.941114 0.644835 0.573813 0.875185 0.901622 0.128847 0.962663

-0.396963 0.823623 0.695119 0.630284 -0.704447 -1.737432 0.822337 0.515764 0.478145 0.540383 0.080948 0.520514

-1.098415 0.538569 -0.284317 -0.350730 -0.554662 -1.906275 0.893529 0.350316 0.940080 0.651110 0.694296 0.249719

0.102471 1.180265 -0.463169 0.478719 0.909196 -0.636291 0.404731 0.782888 0.760890 0.166651 0.586766 0.664987

Column 13:

0.245441

0.075695

0.568012

0.086867

G=A.*D

G =

-1.2492 2.0983 -6.7912 13.7325 -11.9405 22.5867

-1.9848 7.4126 9.0365 10.7148 -14.7934 -43.4358

-6.5905 5.3857 -3.9804 -6.3131 -12.2026 -49.5632

0.7173 12.9829 -6.9475 9.0957 20.9115 -17.1799

M=G./4.5

M =

-0.2776 0.4663 -1.5092 3.0517 -2.6534 5.0193

-0.4411 1.6472 2.0081 2.3811 -3.2874 -9.6524

-1.4646 1.1968 -0.8845 -1.4029 -2.7117 -11.0140

0.1594 2.8851 -1.5439 2.0213 4.6470 -3.8177

DDD=D.^3

DDD =

64 512 1728 4096 8000 13824

125 729 2197 4913 9261 15625

216 1000 2744 5832 10648 17576

343 1331 3375 6859 12167 19683

DL=D>=20

DL =

0 0 0 0 1 1

Dstolb=D(:)

Dstolb =

## 8 Изучение стандартных математических функций и операций с матрицами

B1=sqrt(B)

B1 =

0.8030 0.7575 0.9355 0.9495 0.3590 0.9812 0.4954

0.9068 0.7182 0.6915 0.7351 0.2845 0.7215 0.2751

0.9453 0.5919 0.9696 0.8069 0.8332 0.4997 0.7537

0.6362 0.8848 0.8723 0.4082 0.7660 0.8155 0.2947

B2=log(B)

B2 =

-0.438761 -0.555453 -0.133320 -0.103559 -2.049133 -0.038052 -1.404697

-0.195605 -0.662106 -0.737842 -0.615477 -2.513947 -0.652939 -2.581039

-0.112577 -1.048919 -0.061790 -0.429077 -0.364857 -1.387420 -0.565612

-0.904533 -0.244765 -0.273267 -1.791851 -0.533128 -0.407988 -2.443381

B3=sin(B)

B3 =

0.601067 0.542838 0.767662 0.784334 0.128490 0.820716 0.242985

0.732738 0.493200 0.460133 0.514464 0.080860 0.497326 0.075623

0.779288 0.343195 0.807605 0.606069 0.639845 0.247131 0.537958

0.393772 0.705330 0.689566 0.165881 0.553671 0.617049 0.086757

B1=sqrt(B)

B1 =

0.8030 0.7575 0.9355 0.9495 0.3590 0.9812 0.4954

0.9068 0.7182 0.6915 0.7351 0.2845 0.7215 0.2751

0.9453 0.5919 0.9696 0.8069 0.8332 0.4997 0.7537

0.6362 0.8848 0.8723 0.4082 0.7660 0.8155 0.2947

B2=log(B)

B2 =

-0.438761 -0.555453 -0.133320 -0.103559 -2.049133 -0.038052 -1.404697

-0.195605 -0.662106 -0.737842 -0.615477 -2.513947 -0.652939 -2.581039

-0.112577 -1.048919 -0.061790 -0.429077 -0.364857 -1.387420 -0.565612

-0.904533 -0.244765 -0.273267 -1.791851 -0.533128 -0.407988 -2.443381

B3=sin(B)

B3 =

0.601067 0.542838 0.767662 0.784334 0.128490 0.820716 0.242985

0.732738 0.493200 0.460133 0.514464 0.080860 0.497326 0.075623

0.779288 0.343195 0.807605 0.606069 0.639845 0.247131 0.537958

0.393772 0.705330 0.689566 0.165881 0.553671 0.617049 0.086757

NN=linspace(11.5,34.1,20)

NN =

Columns 1 through 15:

11.500 12.689 13.879 15.068 16.258 17.447 18.637 19.826 21.016 22.205 23.395 24.584 25.774 26.963 28.153

Columns 16 through 20:

29.342 30.532 31.721 32.911 34.100

FF=ones(2,4)

FF =

1 1 1 1

GG=zeros(5)

GG =

0 0 0 0 0

B1D=diag(B1)

B1D =

0.8030

0.7182

0.9696

0.4082

DB=diag(B1D)

DB =

Diagonal Matrix

0.8030 0 0 0

0 0.7182 0 0

0 0 0.9696 0

0 0 0 0.4082

BS1=sort(B)

BS1 =

0.404731 0.350316 0.478145 0.166651 0.080948 0.249719 0.075695

0.644835 0.515764 0.760890 0.540383 0.128847 0.520514 0.086867

0.822337 0.573813 0.875185 0.651110 0.586766 0.664987 0.245441

0.893529 0.782888 0.940080 0.901622 0.694296 0.962663 0.568012

BS2=sortrows(B,2)

BS2 =

0.893529 0.350316 0.940080 0.651110 0.694296 0.249719 0.568012

0.822337 0.515764 0.478145 0.540383 0.080948 0.520514 0.075695

0.644835 0.573813 0.875185 0.901622 0.128847 0.962663 0.245441

0.404731 0.782888 0.760890 0.166651 0.586766 0.664987 0.086867

DS1=sum(D)

DS1 =

22 38 54 70 86 102

DS2=sum(D,2)

DS2 =

102

DP1=prod(D)

DP1 =

840 7920 32760 93024 212520 421200

dt=det(A*A')

dt = 73.956

dinv=inv(A*A')

dinv =

4.4666e-01 -1.9520e-02 1.0379e-01 -3.8572e-03

-1.9520e-02 4.8342e-01 -3.4279e-01 -8.4195e-02

1.0379e-01 -3.4279e-01 4.5435e-01 -1.6761e-02

-3.8572e-03 -8.4195e-02 -1.6761e-02 3.6871e-01

## 9 Изучение индексации в матрицах

D1=D(3,5)

D1 = 22

D2=D(3,4:end)

D2 =

18 22 26

D3=D(2:3,3:5)

D3 =

13 17 21

14 18 22

D4=D(16:20)

D4 =

19 20 21 22 23

D5=D(3:4,[1,3,6])

D5 =

6 14 26

7 15 27

## 10 Изучение управляющих конструкций

Dsum=0

Dsum = 0

for i=1:6

Dsum=Dsum+sqrt(D(2,i))

endfor

Dsum = 2.2361

Dsum = 5.2361

Dsum = 8.8416

Dsum = 12.965

Dsum = 17.547

Dsum = 22.547

Dsum2=0;i=1

i = 1

while (D(i)<22)

Dsum2=Dsum2+sin(D(i))

i=i+1

endwhile

Dsum2 = -0.7568

i = 2

Dsum2 = -1.7157

i = 3

Dsum2 = -1.9951

i = 4

Dsum2 = -1.3382

i = 5

Dsum2 = -0.3488

i = 6

Dsum2 = 0.063321

i = 7

Dsum2 = -0.4807

i = 8

Dsum2 = -1.4807

i = 9

Dsum2 = -2.0173

i = 10

Dsum2 = -1.5971

i = 11

Dsum2 = -0.6065

i = 12

Dsum2 = 0.043799

i = 13

Dsum2 = -0.2441

i = 14

Dsum2 = -1.2055

i = 15

Dsum2 = -1.9565

i = 16

Dsum2 = -1.8066

i = 17

Dsum2 = -0.8937

i = 18

Dsum2 = -0.057011

i = 19

if (D(3,5)>=20)

printf('D(3,5)>=20')

else

printf('D(3,5)<20')

endif

D(3,5)>=20

## 11 Изучение графических функций и их вывод

graphics_toolkit('gnuplot')

plot(D(1,:),B([2,4],1:6))

![Обычный график](ТЕМА1/images/image_plot.png)

hist(A(:),6)

![Гистограмма](ТЕМА1/images/image_hist.png)

pie(C)

![Круговая диаграмма](ТЕМА1/images/pie_image.png)

bar(C)

![График bar](ТЕМА1/images/image_bar.png)

## 12 Изучение текстового редактора и добавление программы

Prog1

D1 = 22

D2 =

18 22 26

D3 =

13 17 21

14 18 22

D4 =

19 20 21 22 23

D5 =

6 14 26

7 15 27

Prog1

D1 = 22

D2 =

18 22 26

D3 =

13 17 21

14 18 22

D4 =

19 20 21 22 23

D5 =

6 14 26

7 15 27

## 13 Сохранение и загрузка области переменных

![Загрузка области данных](images/perem_function.png)

11 KiB Исходник Ответственный История

11 KiB

Исходник Ответственный История