<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/strict.dtd">
clc;
clear all;
close all;
a=[1 2 3;4 5 6;7 8 9];
b=a.^2;
figure;
subplot(1,2,1),plot(a,b);
subplot(1,2,2),plot(b,a);
figure;
x=imread('cameraman.tif');
subplot(1,2,1);
imshow(x)
y=imread('trees.tif');
subplot(1,2,2);
imshow(y)