+  * : / () [] {} 
Plus, minus, multiplication, division, grouping symbols.
Multiplication sign * is not necessary and can be omitted.
Examples: 0.5x^33x or pixeln(2cos[LN2x]) or Pipi/(Exe) Using different types of
grouping symbols (parentheses, brackets, braces) for clarity of
nested expressions is optional, but not necessary. 
base^exponent or p(base,exponent)

Exponentiation base^{exponent}, for example
p(x,2) or x^2 . Instead of ^ you can also
type a single quote ' or a double quote ". If you
don't use p(), make sure that bases or exponents composed by
subexpressions such as additions, subtractions, multiplications or
divisions, are clearly marked off by being completely enclosed into
parentheses, brackets or braces. Example: (x/3)^(2x) . Instead of x"3, of course, you can also enter
xxx. Or, instead of tan(x)'2 you may type tan(x)tan(x). 
root(arg,radic.exp.)

"radicalexponentth" root of argument. Example:
root(x,6) sixth root of x, root[tan(x),4] fourth root of the
tangent of x. 
sqr() 
Square root of argument (number or expression inside the
parentheses). Equivalent to root(argument,2) 
cbr() 
Cube root of argument. Equivalent to root(argument,3)

logn(arg,base)

Logarithm basebase of arg. 
ln() 
Natural logarithm of argument (baseE logarithm of argument
where E is Euler's constant) 
lg() 
Logarithm base10 of argument, equivalent to logn(argument,10). 
lb() 
Logarithm base2 of argument. 
exp() 
Exponential Function E to the power of argument, equivalent to
E^argument 
sin() 
Sine of argument 
cos() 
Cosine 
tan() 
Tangent 
cot()

Cotangent 
sec() 
Secant of argument, equiv. to 1/cos(arg). 
csc() 
Cosecant, equiv. to 1/sin(arg). 
asin() 
Arc sine 
acos() 
Arc cosine 
atan() 
Arc tangent 
acot() 
Arc cotangent 
asec() 
Arc secant, inverse secant. 
acsc() 
Arc cosecant, inverse cosecant. 
sinh() 
Hyperbolic sine, Sinus hyperbolicus 
cosh() 
Hyperbolic cosine, Cosinus hyperbolicus 
tanh() 
Hyperbolic tangent, Tangens hyperbolicus 
coth() 
Hyperbolic cotangent, Cotangens hyperbolicus 
sech() 
Hyperbolic secant, Secans hyperbolicus. 
csch() 
Hyperbolic cosecant, Cosecans hyperbolicus. 
asinh() 
Area sine, Area sinus hyperbolicus, inverse sinh(). 
acosh() 
Area cosine, Area cosinus hyperbolicus, inverse cosh(). 
atanh() 
Area tangent, Area tangens hyperbolicus, inverse tanh(). 
acoth() 
Area cotangent, Area cotangens hyperbolicus, inverse cotanh().

asech() 
Area secant, Area secans hyperbolicus, inverse sech(). 
acsch() 
Area cosecant, Area cosecans hyperbolicus, inverse csch().

gaussd(x,mean,sigma)

Gaussian distribution ("Bell Curve"). gaussd(x,0,1), by the way, is the
special case "Normal distribution density with meanvalue=0,
standarddeviation=1". 
min(arg1,arg2)

Returns the lesser of the two arguments 
max(arg1,arg2)

Returns the greater of the two arguments 
round() 
Rounds argument up or down to the closest integer 
floor() 
Rounds arg down. 
ceil() 
Rounds arg up. 
abs() or   
Absolute value of argument. Example: 2abs(sin[x]) or alternatively 2sin(x) . 
sgn() 
Sign Function.
sgn(x) =

1 for x > 0 
0 for x = 0 
1 for x <
0  