Special functions, Special functions ,3-14 – HP 50g Graphing Calculator User Manual

Page 144

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Page 3-14

Please notice that MOD is not a function, but rather an operator, i.e., in ALG
mode, MOD should be used as

y MOD x, and not as MOD(y,x). Thus, the

operation of MOD is similar to that of +, -, *, /.

As an exercise, verify that 15 MOD 4 = 15 mod 4 = residual of 15/4 = 3

Absolute value, sign, mantissa, exponent, integer and fractional parts

ABS(x)

: calculates the absolute value, |x|

SIGN(x) : determines the sign of x, i.e., -1, 0, or 1.
MANT(x) : determines the mantissa of a number based on log

10

.

XPON(x) : determines the power of 10 in the number
IP(x)

: determines the integer part of a real number

FP(x)

: determines the fractional part of a real number

As an exercise, verify that ABS(-3) = |-3| = 3, SIGN(-5) = -1, MANT(2540) =
2.540, XPON(2540) = 3, IP(2.35) = 2, FP(2.35) = 0.35.

Rounding, truncating, floor, and ceiling functions

RND(x,y)

: rounds up y to x decimal places

TRNC(x,y) :

!truncate y to x decimal places

FLOOR(x) : closest integer that is less than or equal to x
CEIL(x)

: closest integer that is greater than or equal to x

As an exercise, verify that RND(1.4567,2) = 1.46, TRNC(1.4567,2) = 1.45,
FLOOR(2.3) = 2, CEIL(2,3) = 3

Radians-to-degrees and degrees-to-radians functions

D R (x)

: converts degrees to radians

R D (x)

: converts radians to degrees.

As an exercise, verify that D R(45) = 0.78539 (i.e., 45

o

= 0.78539

rad

),

R D(1.5) = 85.943669.. (i.e., 1.5

rad

= 85.943669..

o

).

Special functions

Option 11. Special functions… in the MTH menu includes the following
functions:

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