Pi = 3.14159265358979323846 (the number pi)
E = 2.71828182845904523536 (Euler's constant)
These, as all other dynagraph symbols, are case-sensitive
and must be entered as shown.
The following functions are predefined:
sin cos tan # trigonometric functions
atan asin acos # inverse trigonometric functions
arctan arcsin arccos # synonyms of the above
atan2 # atan2(y,x) is similar to atan(y/x)
arctan2 # synonym of the above
sinh cosh tanh # hyperbolic functions
atanh asinh acosh # inverse hyperbolic functions
arctanh arcsinh arccosh # synonyms of the above
ln (same as log) # the natural logarithm
log10 # logarithm in base 10
exp # the exponential function
erf erfc # error function and complementary error function
sqrt # square root
int # the integer part of a real number
abs # absolute value
BesselJ BesselY # Bessel functions of the first and second kind
Exponentiation is indicated by the caret symbol, as in 2^3.5 .
All computations are performed in the hardware in double precision.
The Bessel functions BesselJ(n,x) and BesselY(n,x) correspond to the functions commonly denoted by J_n(x) and Y_n(x) in the mathematical literature. The index n must be and integer.