Type PRINT SQR (9). (press ENTER)

The answer is 3.

Example:

Y=9 : X=SQR(Y) : PRINT X

press ENTER

 

 

The answer is 3.

In these two examples, 9 is the argument, SQR is the function and 3 is the result.

A LIST OF NUMERIC FUNCTIONS

Function

What it does

 

 

 

ABS

(X)

Returns the absolute (positive) Value of X

SGN

(X)

Returns the sign of the argument

 

 

X negative returns - 1

 

 

X positive returns + 1

 

 

X zero

returns 0

 

 

 

 

SQR

(X)

Returns

the square root of X. X cannot be negative.

LOG

(X)

Gives the natural logarithm of X, i.e.,

 

 

the logarithm to the base e (=2.71828).

 

 

The value of the argument must be greater than zero.

 

 

 

EXP

(X)

Gives you the value ex, i.e., the natural antilogarithm

 

 

of X.

 

 

 

 

INT

(X)

Gives the greatest integer which is less than or

 

 

equal to X.

 

 

 

RND

(X)

Gives a random whole number between 1 and X.

 

 

If X equals zero, RND (X) returns a random number

 

 

between 0 and 1. X cannot be negative.

 

 

 

SIN

(X)

The argument of the trigonometrical functions

COS

(X)

is taken to be in radians (1 radian=360/2π = 57.296 degrees).

TAN

(X)

The range of X is -999 < (X) < 999.

 

 

 

ATN

(X)

This gives the result of ARC TANGENT in radians.

 

 

 

 

51