Change of coordinates to transform a specified plane into the X_3=0 plane | Change of coordinates |

Integration of x->f(g(x)) | Change of Variable, alternate form |

Problem of developing the coefficients of a conic from
five member points --The correction fixes a minor typo in one of the formulae. |
Conics (base) Conics (correction) |

Derived wave problem | Derived waves |

A solution of div(B) = 0 --A nearly identical article was prior posted with the error that "anticurl" was mis-written as "antigrad". The posting with the error is not listed here since it is replaced and obsoleted by the correction. |
div(B)=0 (corrected) |

Extremal type for n-dimensional functions | Extremal Type |

Functional equations discussion | Functional equations (base) Functional equations (correction) |

Internal Rate of Return | IRR (base) IRR (supplement) |

Isoperimetric problem - Variational calculation with specified interior values | Isoperimetric Problem |

Rev. 09/04/08 g