# JacobiSC

JacobiSC[u,m]

gives the Jacobi elliptic function .

# Details • Mathematical function, suitable for both symbolic and numerical manipulation.
• , where .
• is a doubly periodic function in with periods and , where is the elliptic integral EllipticK.
• JacobiSC is a meromorphic function in both arguments.
• For certain special arguments, JacobiSC automatically evaluates to exact values.
• JacobiSC can be evaluated to arbitrary numerical precision.
• JacobiSC automatically threads over lists.

# Examples

open allclose all

## Basic Examples(4)

Evaluate numerically:

Plot the function over a subset of the reals:

Plot over a subset of the complexes:

Series expansions at the origin:

## Scope(33)

### Numerical Evaluation(4)

Evaluate numerically to high precision:

The precision of the output tracks the precision of the input:

Evaluate for complex arguments:

Evaluate JacobiSC efficiently at high precision:

### Specific Values(3)

Simple exact values are generated automatically:

Some poles of JacobiSC:

Find a local inflection point of JacobiSC as a root of :

### Visualization(3)

Plot the JacobiSC functions for various parameter values:

Plot JacobiSC as a function of its parameter :

Plot the real part of :

Plot the imaginary part of :

### Function Properties(8)

JacobiSC is -periodic along the real axis:

JacobiSC is -periodic along the imaginary axis:

JacobiSC is an odd function in its first argument: is an analytic function of for :

It is not, in general, analytic:

It has both singularities and discontinuities for : is neither nondecreasing nor nonincreasing:

JacobiSC is not injective for any fixed It is injective for : is not surjective for :

It is surjective for :

JacobiSC is neither non-negative nor non-positive:

JacobiSC is neither convex nor concave:

### Differentiation(3)

First derivative:

Higher derivatives:

Plot higher derivatives for :

Derivative with respect to :

### Integration(3)

Indefinite integral of JacobiSC:

Definite integral of JacobiSC:

More integrals:

### Series Expansions(3)

Taylor expansion for :

Plot the first three approximations for around :

Taylor expansion for :

Plot the first three approximations for around :

JacobiSC can be applied to a power series:

### Function Identities and Simplifications(3)

Parity transformation and periodicity relations are automatically applied:

Identity involving JacobiNC:

Argument simplifications:

### Function Representations(3)

Representation in terms of Tan of JacobiAmplitude:

Relation to other Jacobi elliptic functions:

## Applications(3)

Flow lines in a rectangular region with a current flowing from the lowerright to the upperleft corner:

Conformal map from a unit triangle to the unit disk:

Show points before and after the map:

Solution of the sinhGordon equation :

Check the solution:

Plot the solution:

## Properties & Relations(3)

Compose with inverse functions:

Use PowerExpand to disregard multivaluedness of the inverse function:

Solve a transcendental equation:

JacobiSC can be represented with related elliptic functions:

## Possible Issues(2)

Machine-precision input is insufficient to give the correct answer:

Currently only simple simplification rules are built in for Jacobi functions: