>> A = magic(3) A = 8 1 6 3 5 7 4 9 2 >> help magic magic Magic square. magic(N) is an N-by-N matrix constructed from the integers 1 through N^2 with equal row, column, and diagonal sums. Produces valid magic squares for all N > 0 except N = 2. Reference page in Help browser doc magic >> b = [1; 0; 1] b = 1 0 1 >> a\b Cannot find an exact (case-sensitive) match for 'a' The closest match is: A in C:\Users\11\Documents\MATLAB\A.m Did you mean: >> A\b ans = 0.2111 0.0444 -0.1222 >> x = A\b x = 0.2111 0.0444 -0.1222 >> A*x - b ans = 1.0e-15 * 0 0.1110 0 >> det(A) ans = -360 >> A = [A; zeros(2,3)] A = 8 1 6 3 5 7 4 9 2 0 0 0 0 0 0 >> rank(A) ans = 3 >> x = A\b Error using \ Matrix dimensions must agree. >> b = [b; 0;0] b = 1 0 1 0 0 >> x = A\b x = 0.2111 0.0444 -0.1222 >> A = [A zeros(5,2)] A = 8 1 6 0 0 3 5 7 0 0 4 9 2 0 0 0 0 0 0 0 0 0 0 0 0 >> x = pinv(A)*b x = 0.2111 0.0444 -0.1222 0 0 >> syms y >> solve(y^2-6y-10) solve(y^2-6y-10) | Error: Unexpected MATLAB expression. >> solve(y^2-6*y-10) ans = 19^(1/2) + 3 3 - 19^(1/2) >> mupad ans = MuPAD notebook >> solve(sin(y) - 6) ans = asin(6) pi - asin(6) >> syms x real >> syms y real >> solve(y^2-x*y-10, y) ans = x/2 + (x^2 + 40)^(1/2)/2 x/2 - (x^2 + 40)^(1/2)/2 >> solve(y^2-x*y-10, y); >> mupad ans = MuPAD notebook >> symlink Undefined function or variable 'symlink'. >> symlink