% CS99 Fall 2002
% Prelim 1
% Problem 1 
%------------------------------------------------------------------------------
% 1a [1 point]	Your lab instructor's name is GUN SRIJUNTONGSIRI.

% 1b [1 point]	Your lecture instructor's name is DAVID I. SCHWARTZ.

% 1c [1 point] 	Programming is AUTOMATING PROBLEM SOLVING.

% 1d [2 points]	MATLAB stands for MATRIX LABORATORY.

% 1e [1 point]	True or False: Everything in MATLAB is an array: TRUE.

% 1f [1 point]	True or False: 
%               The assignment statements a=10 and A=10 are identical: TRUE.

% 1g [2 points]	Demonstrate how to remove an assigned value from
%               the variable x from the command window.

  clear x % or just CLEAR

% 1h [3 points]	Show one expression statement that will evaluate:

  17 * sqrt( 2 + 3 / ( 4 - 1 ) )


% 1i [2 points]	What is the output from the following statements?
 
  x = 1; y = x + 1, z = x

  % output: y = 2
  %         z = 1


% 1j [2 points]	What is the output from the following statement?

  ~(1 ~= ~1) | 1

  % output: 1


% 1h [4 points] Write a MATLAB expression that generates a random 
%               integer between -2 and 1, inclusive.

  % formula: floor(rand*(max-min+1)) + floor(min)
  % do some arithmetic: floor(rand*(1-(-2)+1)) + floor(-2)
  
  floor(rand*4) - 2