Rustam Usmanov

Experiment No: 4
A supermarket conveyor belt holds an array of groceries. The price of each product (in
pounds) is [ 0.6 1.2 0.5 1.3 ] ; while the numbers of each product are [ 3 2 1 5 ]. Use
MATLAB to calculate the total bill.
Code
clc;
price=[0.6];
number=[3 2 1 5];
cost=price.*number'; % or cost=sum(price.*number);
disp(cost);
Output:
1.8000 1.2000 0.6000 3.0000

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Experiment No: 5
The sortrows(X) function will sort a vector or matrix X into increasing row order. Use this
function to sort a list of names into alphabetical order.
Code
clc;
fable=['once ';'upon ';'a ';'time ';'there';'lived';'three';'bears'];
sorted=sortrows(fable);
disp(sorted);
Output:_a_bears_lived_once_there_three_time_upon__Experiment_No:_6'>Output:
a bears lived once there three time upon

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Experiment No: 6
The “identity” matrix is a square matrix that has ones on the diagonal and zeros
elsewhere. You can generate one with the eye() function in MATLAB. Use MATLAB to
find a matrix B, such that when multiplied by matrix A=[ 1 2; -1 0 ] the identity matrix I=[
1 0; 0 1 ] is generated. That is A*B=I.
Code
clc;
A=[ 2 1; -1 0];
I=eye(2);
B=I/A;
disp(B);
Output:
0 -1
1 2

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Experiment No: 7
Draw a graph that joins the points (0,1), (4,3), (2,0) and (5,-2).
code:
x=[0,4,2,5]
y=[1,3,0,-2]
plot(x,y)
Output:

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Experiment No: 8
Draw a target made up of three circular rings of radius 1, 2 and 3. The formula for the
co-ordinates of a circle are:
x = r.cos(è) • 0 < è < 2ð
y = r.sin(è) • r > 0
code:
ex32.m
angle=0:0.01:2*pi;
x1=1*cos(angle);
y1=1*sin(angle);
x2=2*cos(angle);
y2=2*sin(angle);
x3=3*cos(angle);
y3=3*sin(angle);
plot(x1,y1,'-',x2,y2,'-',x3,y3,'-');
axis('equal');