Alphabetically 

Calculus

abs
acos
acosh
asin
asinh
atan
atan2
atanh
beta
betai
ceil
compose
cos
cosh
csc
curl
derivative
divergence
exp
fix
floor
gamma
gammai
gammaic
gammal
gradient
jacobian
jacobiang New
jacobiant
laplacian
log
log10
partial
pow
round
sec
sign
simplify
sin
sinh
sqrt
tan
tanh
taylor
toDeg
toRad
totalderivative

Linear Algebra

anglev
cholesky
cofactor
column
columnspace
cond
determinant
echelon
echelonr
eigenmatrix
eigenvalues
independent
inner
inverse
lugetL
lugetP
lugetU
mexp
minor
minormatrix
mlog
mpow
msqrt
norm1
norm2
normalize
normf
norminf
nullity
nullspace
orthonormal
projection
pseudoinv
qrgetQ
qrgetR
rank
row
rowadd
rowspace
rowswap
rowtimes
rowtimesadd
solve
solven
span
svdgetS
svdgetU
svdgetV
trace
transpose
vandermonde

Miscellaneous

apply
comp
find
findall
info
magicsquare
match
matchcount
mortgage
shortcut
sort

Arrays

array
arrayi
hermitian New
insert
join
joinbottom
joinright
logarray
matrix
matrixd
peek
peekf
pop
popf
push
pushf
random
randommatrix
remove
reverse
size
subarray
submatrix
swap

Complex Numbers

angle
conjugate
Im
Re

Statistics

autocorrelation
bounds
centralTendency
corrcoeff
correlation
covariance
covarianceMLE
dataDistribution
dispersion
frequencies
geometricMean
harmonicMean
interquartileRange
kstatistic
kurtosis
kurtosisExcess
linearreg
max
mean
meanDeviation
median
min
mode
moment
probabilities
quantile
quantileInverse
range
rootMeanSquare
sample
skew
skewError
standardDeviation
standardError
standarize
sum
trimmedMean
variance
varianceMLE
zeroMean

Statistics-Inferential

anova_bonferroni
anova_brownforsythe
anova_ci_tukey
anova_duncan
anova_gameshowell
anova_ht_kruskal
anova_ht_oneway
anova_levene
anova_lsd
anova_scheffe
anova_sidak
anova_snk
anova_welch
breslowday
chi2_fisherexact
chi2_goodness
chi2_independent
chi2_kappa
chi2_likelihood
chi2_mantel
chi2_mcnemar
chi2_mcnemarbowker
chi2_risk
chi2_table
chi2_totable
chi2_yates
ci_onesample_pro
ci_onesample_reqsize
ci_onesample_std
ci_onesample_t
ci_onesample_z
ci_onesample_zreqsize
ci_twosample_pro
ci_twosample_reqsize
ci_twosample_std
ci_twosample_tnonpooled
ci_twosample_tpaired
ci_twosample_tpooled
dagostinopearson
ht_onesample_pro
ht_onesample_std
ht_onesample_t
ht_onesample_wilcoxon
ht_onesample_z
ht_onesample_zpower
ht_onesample_ztypeIIerror
ht_twosample_mannwhitney
ht_twosample_pairedwilcoxon
ht_twosample_pro
ht_twosample_std
ht_twosample_tnonpooled
ht_twosample_tnonpooled_w
ht_twosample_tpaired
ht_twosample_tpooled
mantelhaenzel
normalscores
linearreg_ana
linearreg_ci_mea
linearreg_ci_pin
linearreg_ci_slo
linearreg_ht_nor
linearreg_ht_reg
linearreg_ht_slo
linearreg_res
regression
regression2
shapirowilk

Probability

cdf
coin
combination
dice
die
distribution
factorial
fibonacci
invsnd
leftTail
pdf
pdfinfo
random
randommatrix
rightTail
snd
variate

User Interface

cd New
chdir New
clear
cmd New
copy New
cp New
dir New
erase New
grabchart
grabplot
grabplot3D
grep New
ls New
pwd New
rm New
set
show

Arithmetic

denominator
factors
gcd
lcm
numerator
primes

Programming

//
#
= (assignment)
; (end of statement)
++ (increment)
-- (decrement)
{
}
argumentName
break
case
catch New
continue
default
do
else
exception New
fieldnames
fieldremove
fieldset
fieldvalues
for
global
identity
if
input
input_array
input_matrix
isArray
isBool
isBoolFunction
isComplex
isContinuousDistribution
isDiagonal
isDifferentiable
isDiscreteDistribution
isDistribution
isEven
isFunction
isHermitian
isInteger
isMatrix
isOdd
isPositiveDefinite
isRational
isReal
isScalar
isString
isStructure
isSymmetric
isUnity
isVector
isVoid
isZero
numberOfArguments
parse
print
printf
println
replaceArgument New
return
sprintf
switch
throw New
toString New
try New
while

Graphics

barchart
boxwhiskers
pareto
pie
plot
plot3D
xychart

Logic

truthtable

Operators

+ (addition)
- (subtraction)
* (multiplication)
/ (division)
== (equal)
!= (not equal)
! (not)
~ (not)
>
>=
<
<=
&&
and
||
or
mod
int
^ (power)
** (power)
cross
dot
then
-> (then)
iff
xor
; (new row)
@

Constants

e
false
i
j
Infinity
NaN
pi
true
void