Need help writing matlab code Consider the system of equatio

Need help writing matlab code

Consider the system of equations:

Write a MATLAB m-file to efficiently determine all the values of T between -40 and 40 in increments of 0.05 for which the Euclidean norm of the solution vector x = [w; x; y; z] is between 70 and 90.

Solution

Igray = rgb2gray(I); Ibw = im2bw(Igray,graythresh(Igray)); Iedge = edge(uint8(Ibw)); se = strel(\'square\',3); Iedge2 = imdilate(Iedge, se); Ifill= imfill(Iedge2,\'holes\'); [Ilabel num] = bwlabel(Ifill); Iprops = regionprops(Ilabel); Ibox = [Iprops.BoundingBox]; [y,x]=size(Ibox); x=x/4; Ibox = reshape(Ibox,[4 x]); Ic = [Iprops.Centroid]; [z,w]=size(Ic);% w=w/2;% Ic = reshape(Ic,[2 w]); Ic = Ic\'; Ic(:,3) = (mean(Ic.^2,2)).^(1/2); Ic(:,4) = 1:w; Ic2 = sortrows(Ic,2); for cnt = 1:selected_ln Ic2((cnt-1)*selected_col+1:cnt*selected_col,:) = sortrows(Ic2((cnt- 1)*selected_col+1:cnt*selected_col,:),4); end Ic3 = Ic2(:,1:2); ind = Ic2(:,4); for cnt = 1:selected_ln*selected_col img{cnt} = imcrop(Ibw,Ibox(:,ind(cnt)));