jacobiCD
Jacobi elliptic function cd
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jacobiCD(u
,m
)
jacobiCD(u,m)
represents the Jacobi elliptic
function cd.
Let .
Then the Jacobi elliptic function cd is defined as follows:
The Jacobi functions are defined for complex values of u and m.
The Jacobi functions are meromorphic and doubly periodic with
periods and
with
respect to u.
For m = 0 and m = 1, the Jacobi functions reduce to trigonometric or constant functions.
If one argument is a floating-point number, and the other one can be converted to a floating-point number, then a floating-point number is returned.
When called with floating-point arguments, these functions are
sensitive to the environment variable DIGITS
which determines
the numerical working precision.
For most arguments, the Jacobi functions return themselves unevaluated:
jacobiCD(2,1/2)
Floating-point numbers are returned if at least one of the arguments is a floating-point number:
jacobiCD(1.5,1/2)
Floating-point evaluation can be enforced by using float
:
float(jacobiCD(1,-1))
For m = 0, the result is expressed using a trigonometric function:
jacobiCD(u,0)
For m = 1, the result is a constant:
jacobiCD(u,1)
|
An arithmetical expression specifying the parameter. |
Arithmetical expression.