Where should the loop control variable be initialized?  

The length(…) function applied to a column vector gives you the number of rows.

You can access any elements(s) of an array of any dimension using single index vector.

What is the output of the following code:x = 5;y = 8; if (x ~= 5)       y = 7;       x = x + y; else       y = 4;       x = x – y; end   disp(x);  

In Matlab, using for loop is less efficient than array operations.

All loops include the three steps: initialize, test and update.

If x=-2 then the following operation is allowed in Matlab: sin(sqrt(x)).

A function cannot have multiple outputs.

In Matlab ending the for loop with the word end is optional.

Double-clicking an entry in the Command History window lets you rerun that command.