What is wrong with this code?

iPad 9:21 PM * 48%- . Files MATLAB Drivetest.m 1 2 3 4 5 X = linspace(8,1*1e-5, 1000); Z =linspace(8, 1e-5,1000); lambda =800e-9; k=2*pi/lambda; theta =8.698 132 test Error: File: test.m Line: 8 Column:7 Unexpected MATLAB operator 7 8 9 E = 1 = L = 2E8. * ( exp ( k."Z*cos ( theta))).ros (k."X*theta); 100*cosd(k*, X"sin(theat a)); lambda /2*sind (theta); Created more than 10 graphic figures, which is the maximum supported. Close the extra figures using close (n) or close all > test Error: File: test.m Line: 8 Column: 16 Unexpected MATLAB operator 10 mesh(X,Z,I) Created more than 10 graphic figures, which is the maximum supported. Close the extra figures using close(n) or close all test Error: File: test.m Line: 8 Column: 16 Unexpected MATLAB operator Created more than 10 graphic figures, which is the maximum supported. Close the extra figures using close(n) or close all test Error: File: test.m Line: 8 Column: 16 Unexpected MATLAB operator Created more than 10 graphic figures, which is the maximum supported. Close the extra figures using close(n) or close allt