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General Math Functions (Continued)
Function
Description
Typing Aid
CHG(n;:n,)
Percent change between n; and n,.
B (:CHG ]
COMB(n:r)
Number of combinations of n items
B(ProB]
taken r at a time.
{Ch,r }
COS(x)
Cosine.*
COS
COSH(x)
Hyperbolic cosine.
B(xyr)
DEG(x)
Converts x in radians to decimal
@(b~RAD]
degrees.
{DEG}
EXP(x)
Natural antilogarithm; e*.
FACT(x)
Factorial; x is an integer > 0.
B(PrROB] {n!}
FP(x)
Fractional part.
B(PARTS] {FP}
HMS(x)
Converts x in decimal hours (degrees) to
[H~HMS]
HH.MMSS (DD.MMSS) format.
{+HMS }
HR(x)
Converts x in H.MMSS (D.MMSS) for-
(H~HMS]
mat to decimal format.
{*HR}
INV(x)
Reciprocal, 1/x.
1/x
IP(x)
Integer part.
B(PARTS] {IP}
LN(x)
Natural (base e) log.
LOG(x)
Common (base 10) log of x.
B(LoG)
PERM(n:r)
Permutations of n items taken r at a
B(ProB]
time.
{P n,r}
x
w; 3.14159265359 (12 digits).
B
RAD(x)
Converts x in decimal degrees to
B(Do~RAD)
radians.
{RAD}
r(x:y)
Radius polar coordinate for (x,y) rectan-
B[RADIUS]
gular coordinates.*t
RN(x)
x rounded to the number of decimal
B(PARTS] {RN}
places in the current display format.
SIN(x)
Sine.*
SIN
SINH(x)
Hyperbolic sine.
B(Hyr]
SQ(x)
x2.
B 2]
* Uses the current angular mode—Degrees or Radians.
T The function does not use the coordinate conversion registers.
6: Evaluating and Solving Equations
81
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