Using the MATLAB Help menu, discuss how the following functions are used. Create a simple example and demonstrate the proper use of the function.

Question

a. ABS (X)
b. TIC, TOC
c. SIZE (x)
d. FIX (x)
e. FLOOR (x)
f. CEIL (x)
g. CALENDAR

Answer 1

a. ABS (X)
ABS(X) is the absolute value of the elements of X.
Example: abs(-4), ans = 4
b. TIC, TOC
TIC Start a stopwatch timer. The sequence of commands
TIC, operation, TOC prints the number of seconds required for the operation.
c. SIZE (x)
D = SIZE(X), for M-by-N matrix X, returns the two-element
row vector D = [M, N] containing the number of rows and columns in the matrix.
Example: x=[1 2 4;-1 0 1], d=size(x), d = 2 3
d. FIX (x)
FIX(X) rounds the elements of X to the nearest integers towards zero.
Example: fix(1.56), ans =1
e. FLOOR (x)
FLOOR(X) rounds the elements of X to the nearest integers towards minus infinity
Example: floor (-1.56), ans = -2
f. CEIL (x)
CEIL(X) rounds the elements of X to the nearest integers towards infinity.
Example: ceil(1.56), ans = 2
g. CALENDAR
CALENDAR or CALENDAR(DATE) or CALENDAR(YEAR,MONTH)
is a 6-by-7 matrix containing a calendar for the current or specified month.
The first column of the returned matrix corresponds to Sunday.