Question

Using Matlab; Please show written program to execute and instructions to create plot:

1. Create a vector of x values from 0 to 20 pi, with an increment of pi/100.

y=x sin (x) and z= x cos (x)

a) create a figure window with two subplots. In first subplot create an x versus y plot and in the second subplot create an y versus z plot.

b) create a polar plot of x and y. Add title and labels to every graph.

Answer 1

comment if you have any doubts

output:

%matlab script

%clearing the history
clear;
clc;
%declaring time from 0 to 50 at an interval of 1 sec
x=0:pi/100:20*pi;
%calculating height in terms of time
y=x.*sin(x);
z=x.*cos(x);
%plotting time vs height graph
figure(1);
subplot(2,1,1);
plot(x,y);

title('x vs Sin(x)');
xlabel('x in radians');
ylabel('sine');

%plotting time vs height graph
subplot(2,1,2);
plot(y,z);

title('Sin(x) vs Cos(x)');
xlabel('sine');
ylabel('cosine');

figure(2);
polar(x,y);
title('Sin(x) vs Cos(x) polar plot');
xlabel('sine');
ylabel('cosine');