﻿ Function Reference

# Function Reference

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## Example

e

constant e = 2.18281828…

y = e^x

pi

constant p = 3.141592654…

y = pi x2

sin

sine of an angle

y = sin  2x

cos

cosine of an angle

y = cos3  x

tan

tangent of an angle

r = 2tan th

asin or sin-1

arcsine or inverse sine

y = asin(x)        y = sin-1(x)

acos or cos-1

arccosine or inverse cosine

as above

atan or tan-1

arctangent or inverse tangent

as above

sec

secant of an angle

y = sec2 x

cosec

cosecant of an angle

as above

cot

cotangent of an angle

as above

cosh

hyperbolic cosine

y = cosh x

sinh

hyperbolic sine

y = sinh x

tanh

hyperbolic tangent

y = tanh x

ln

natural logarithm

y = ln(2x)

log

base 10 logarithm

y = log(x)

log base n

base n logarithms

y = log2 x

sr or sqrt

square root

y = sr(x)            y = sqrt(x-2)

abs

absolute value

y = abs x

|

absolute value

y = |x - 2|

root

nth root.  Any root of the argument can be found by adding the number in front of the word "root"

y = 3root x        y = 5root(x2)

normal

calculates the normal probability distribution for x standard deviations from the mean

y = normal(x)

gint

greatest integer function

y = gint(x)

greatest integer function

y = [| x |]

sgn

sign function

y = sgn(x)

 asec or arcsec

inverse secant

y = asec(x)

acosec or arccosec

inverse cosecant

y = acosec(x)

acot or arccot

inverse cotangent

y = acot(x)