Laboratoriya ishi №2 Mavzu: Sun’iy intelekt texnologiyasini MatLab dasturi yordamida modellashtirish. Ishdan maqsad

5) Gistogramma hosil qilish.

>> randn(1,10000);

>> hist(ans)
>> hist(ans,50)



6) Birlik matritsa hosil qilish.
>> I = eye(5)
I =
1 0 0 0 0
0 1 0 0 0
0 0 1 0 0
0 0 0 1 0
0 0 0 0 1


7) Matritsa o’lchamini ko’rish.
>> A = [1 2;3 4;5 6]
A =
1 2
3 4
5 6
>> size(A)
ans =
3 2
>> size (A, 1)
ans =
3
>> v = [1 2 3 4]
v =
1 2 3 4
>> length(v)
ans =
4
>> length (A)
ans =
3
8) Fayllar bilan ishlash.
pwd - Joriy yo'lni ko'rish
cd - Belgilangan katalogni kiritish
ls - Joriy yo'ldagi barcha fayllarni ko'rsatish


9) Faylni yuklash
>> load ex1data1.txt
yoki
>> load('ex1data1.txt')
10)Xotiradagi barcha o’zgaruvchilarni ko’rish
>> who
Your variables are:
A ans ex1data1 v
>> whos
Name Size Bytes Class Attributes
A 3x2 48 double
ans 1x57 114 char
ex1data1 97x2 1552 double
v 1x4 32 double
10)Xotiradagi barcha o’zgaruvchilarni ko’rish
clear xxx – o’zgaruvchini o’chirish
clear – barcha o’zgaruvchilarni o’chirish
v = ex1data1(1:10) - ex1data1 ning birinchi 10 ta qiymatini v ga o’zlashtirish.
save hello.mat v - v ma'lumotlarini hello.mat fayliga ikkilik formatida saqlash.
save hello.txt v –ascii - v ma'lumotlarini hello.mat fayliga ikkilik bo’lmagan formatda saqlash.
10)Index bilan ishlash
>> A
A =
1 2
3 4
5 6
>> A(3,2)
ans =
6
>> A (3,:)
ans =
5 6
>> A(:,2)
ans =
2
4
6
>> A ([1 3],:)
ans =
1 2
5 6
>> A(:,2) = [12;14;16]
A =
1 12
3 14
5 16
>> A = [A,[12;14;16]]
A =
1 12 12
3 14 14
5 16 16
>> A (:)
ans =
1
3
5
12
14
16
12
14
16