FIC matlab 2019 2

%-- 10-09-2019 19:05:22 --% format compact x = -2:2; x = -2:0.1:2; fx = sqrt(1-(abs(x)-1).^2); gx = acos(1 - abs(x)) - pi; figure plot(x,fx,'r','Linewidth',2) hold on plot(x,gx,'r','Linewidth',2) clc %7 t1 = 1:63; t2 = 64:80; t3 = 81:100; t4 = 101:120; f1 = sin(2*pi.*t/63); f1 = sin(2*pi.*t1/63); f2 = zeros(size(64:80)); f3 = ones(size(t3)); f4 = -1*ones(size(t4)); figure plot(t1,f1) hold on plot(t2,f2) plot(t3,f3) plot(t4,f4) plot([80 81], [0 1]) plot([100 101], [1 -1]) clc %aula de hoje v = randi(1,3) v = randi(3) help randi v = randi(10,3) v = randi(10,3,1) help randn b = randn(1,3) clc A = randi(10,4) v = randi(10,1,4) v1 = v(3) v2 = v(2) v2 = v(4) A A1 = A(5) A1 = A(9) A1 = A(1,3) A1 = A(1,2) A A(3,2) A(3,5) v v(3) clc x= 4; n = 2; matriz = randn(n,x) matriz(n,x) x= 3; n = 4; matriz = randn(n,x) matriz(n,x) x= 1; matriz(n,end) matriz(end,end) A clc A a = A([1 3],:) a = A(1:3,:) a = A(1:3,1:3) A a = A(2:end,2:end) A(1:2,2) A A(1,:) = [] A A(:,4) A(:,4) = [] A