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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)