ICT01: Introduction to MATLAB basics

The common data type for numeric value(s) in MATLAB?

• int

• array

• char

• double

What is the size of an array if Arr = [9 3 5 7 10 0 16]?

• 7x1

• 7x7

• 1x7

• 7

What is the correct MATLAB command for y = 3(x+2) when x = 2?

• >> y = 3*(x+2);

  >> x =2;

• >> y = 3(x+2);

  >> x = 2;

• >> x = 2;

  >> y = 3*(x+2);

• >> x = 2;

  >> y = 3(x+2);

Rules for naming variable: All variable name must contain letters, numbers and '_'s only.

• True

• False

What command clears all variables in workspace browser?

• clc

• delete

• clf

• clear

MATLAB format (a)   display a numeric output with fifteen significant numbers after the decimal point.

What pre-defined constant in MATLAB that represents square root of -1?

• i,j

• eps

• NaN

• ans

What is the size of the array myArr = [ 2,45,30;10,20,30]?

(a)  

Inf is a pre-defined constant that is an output of an undefined mathematical operation, such as the division of 0 by 0?

• True

• False

What MATLAB operator that is denoted by an apostrophe, swaps the row and the column of an array?

(a)