# SphericalHankelH1

SphericalHankelH1[n,z]

gives the spherical Hankel function of the first kind .

# Examples

open allclose all

## Basic Examples(6)

Evaluate numerically:

Plot the real and imaginary parts of the function:

Plot over a subset of the complexes:

Series expansion at the origin:

Series expansion at Infinity:

Series expansion at a singular point:

## Scope(32)

### Numerical Evaluation(6)

Evaluate numerically:

Evaluate to high precision:

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

Complex number inputs:

Evaluate efficiently at high precision:

SphericalHankelH1 can be used with CenteredInterval objects:

Compute the elementwise values of an array:

Or compute the matrix SphericalHankelH1 function using MatrixFunction:

### Specific Values(4)

Limiting value at infinity:

SphericalHankelH1 for symbolic n:

Find the first positive zero of imaginary part of SphericalHankelH1:

Different SphericalHankelH1 types give different symbolic forms:

### Visualization(3)

Plot the absolute values of SphericalHankelH1 function for various orders:

Plot the real part of :

Plot the imaginary part of :

Plot the real part of :

Plot the imaginary part of :

### Function Properties(7)

Complex domain for is the whole plane except :

It is not defined as a function from to :

SphericalHankelH1 is a complex linear combination of SphericalBesselJ and SphericalBesselY:

is not an analytic function:

SphericalHankelH1 is not injective over complexes:

Use FindInstance to find inputs that demonstrate it is not injective:

has both singularities and discontinuities along the non-positive real axis:

### Differentiation(3)

First derivative with respect to :

Higher derivatives with respect to :

Plot the absolute values of the higher derivatives of with respect to :

Formula for the derivative with respect to z:

### Integration(3)

Compute the indefinite integral using Integrate:

Definite integral:

More integrals:

### Series Expansions(4)

Find the Taylor expansion using Series:

General term in the series expansion using SeriesCoefficient:

Find the series expansion at Infinity:

Taylor expansion at a generic point:

### Function Identities and Simplifications(2)

Use FullSimplify to simplify spherical Hankel functions of the first kind:

Recurrence relations:

## Properties & Relations(1)

Wolfram Research (2007), SphericalHankelH1, Wolfram Language function, https://reference.wolfram.com/language/ref/SphericalHankelH1.html.

#### Text

Wolfram Research (2007), SphericalHankelH1, Wolfram Language function, https://reference.wolfram.com/language/ref/SphericalHankelH1.html.

#### CMS

Wolfram Language. 2007. "SphericalHankelH1." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SphericalHankelH1.html.

#### APA

Wolfram Language. (2007). SphericalHankelH1. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SphericalHankelH1.html

#### BibTeX

@misc{reference.wolfram_2024_sphericalhankelh1, author="Wolfram Research", title="{SphericalHankelH1}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/SphericalHankelH1.html}", note=[Accessed: 20-September-2024 ]}

#### BibLaTeX

@online{reference.wolfram_2024_sphericalhankelh1, organization={Wolfram Research}, title={SphericalHankelH1}, year={2007}, url={https://reference.wolfram.com/language/ref/SphericalHankelH1.html}, note=[Accessed: 20-September-2024 ]}