%Question 3c
a1 = lasso(Phi_c * Psi, y_c, 'Lambda', 1);
next_img1 = reshape((Psi * a1) / max(Psi * a1), [64,64]);
subplot(2,2,1)
imshow(next_img1)
title('Lasso Regression w/ Lambda = 1')

a2 = lasso(Phi_c * Psi, y_c, 'Lambda', .1);
next_img2 = reshape((Psi * a2) / max(Psi * a2), [64,64]);
subplot(2,2,2)
imshow(next_img2)
title('Lasso Regression w/ Lambda = .1')

a3 = lasso(Phi_c * Psi, y_c, 'Lambda', .01);
next_img3 = reshape((Psi * a3) / max(Psi * a3), [64,64]);
subplot(2,2,3)
imshow(next_img3)
title('Lasso Regression w/ Lambda = .01')

a4 = lasso(Phi_c * Psi, y_c, 'Lambda', .001);
next_img4 = reshape((Psi * a4) / max(Psi * a4), [64,64]);
subplot(2,2,4)
imshow(next_img4)
title('Lasso Regression w/ Lambda = .001')