HP 40gs Manual do Utilizador descarregar pdf (Página 170)

100

101

13-16 Using mathematical functions

Example

9 MOD 4 returns 1

% x percent of y; that is, x/100*y.

%(x, y)

Example

%(20,50) returns 10

%CHANGE Percent change from x to y, that is, 100(y–x)/x.

%CHANGE(x, y)

Example

%CHANGE(20,50) returns 150

%TOTAL Percent total : (100)y/x. What percentage of x, is y.

%TOTAL(x, y)

Example

%TOTAL(20,50) returns 250

RAD→DEG Radians to degrees. Converts value from radians to

degrees.

RAD→DEG (value)

Example

RAD→DEG(π) returns 180

ROUND Rounds value to decimal places. Accepts complex

numbers.

ROUND(value, places)

Round can also round to a number of significant digits as

showed in example 2.

Examples

ROUND(7.8676,2) returns 7.87

ROUND (0.0036757,-3) returns 0.00368

SIGN Sign of value. If positive, the result is 1. If negative, –1. If

zero, result is zero. For a complex number, this is the unit

vector in the direction of the number.

SIGN(value)

SIGN((x, y))

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