First of all, two quick corrections to the first lecture: 

1) As I suspected, the newline character in fprintf format 
specification is "\n", not "/n"

2) To make the fprintf work properly with lists, you should use

fprintf("%g  %g \n", [x; y])

not fprintf("%g  %g \n", x, y) as I've written in class: this will 
ensure that the print statement cycles properly through the x, y data 
pairs (the way I've written it, first all x-values are printed, 
followed by all y-values, instead of printing the pairs of values - we 
don't want that to happen).

Here is a correct example for making a table:

  i=1:10;
  x=0.1:0.1:1.0;
  y=sin(x);
  fprintf('No.    x    sin(x)\n'); fprintf('%2d   %3g   %8g\n',[i;x;y]);

In fact, you can cut-and-paste these four lines directly into your 
MATLAB command window, and see the result.

The corresponding table using the "for" loop would look like this:

  for i=1:10
  x = 0.1 * i;
  fprintf('%2d  %8g  %8g \n', i, x, sin(x))
  end

Note that in the above two examples I am specifying the total width of 
the printed values, even for the integer, and not the number of 
decimals following the decimal point; this way I ensure that the 
columns line up nicely.