# Kelvin

**CodeCogs**

## Interface

## Overview

This module contains components which calculate different types of Kelvin functions.## Bei

doubleBei( | double | x | ) |

*MIN*limit it uses the polynomial approximation : otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the function is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

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## Ber

doubleBer( | double | x | ) |

*MIN*limit it uses the polynomial approximation : otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the function is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## Kei

doubleKei( | double | x | ) |

*MIN*limit it uses the polynomial approximation : where otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the function is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## Ker

doubleKer( | double | x | ) |

*MIN*limit it uses the polynomial approximation : where otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the function is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## DBei

doubledBei( | double | x | ) |

*MIN*limit it uses the polynomial resulted by differentiating the approximation polynomial of the Bei function. Otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the derivative is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## DBer

doubledBer( | double | x | ) |

*MIN*limit it uses the polynomial resulted by differentiating the approximation polynomial of the Ber function. Otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the derivative is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## DKei

doubledKei( | double | x | ) |

*MIN*limit it uses the polynomial resulted by differentiating the approximation polynomial of the Kei function. Otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the derivative is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

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## DKer

doubledKer( | double | x | ) |

*MIN*limit it uses the polynomial resulted by differentiating the approximation polynomial of the Ker function. Otherwise it calculates its asymptotic expansion : where

### Parameters

x The value at which the derivative is to be evaluated.

### Authors

*Lucian Bentea*

##### Source Code

Source code is available when you buy a Commercial licence.

Not a member, then Register with CodeCogs. Already a Member, then Login.