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## [Help-gsl] finding roots, solving ODEs and numerical integration of comp

**From**: |
Владимир Дрынкин |

**Subject**: |
[Help-gsl] finding roots, solving ODEs and numerical integration of complex functions |

**Date**: |
Thu, 4 Aug 2011 22:08:49 +0400 |

Hello, all!
I have three questions:
a) how can i find complex roots of nonlinear and nonpolynomial
function? The example of this function is described here:
http://lists.gnu.org/archive/html/help-gsl/2007-04/msg00046.html but
no one has answered this thread :(
b) how can i numerically integrate the function returning complex
numbers (for example, gsl_complex_tan)? i have read the gsl reference,
but it seems like there is no appropriate algorithms.
c) if i have an ODE like dy/dz=f(z) and the function f(z) returns
complex numbers, how can i solve it numerically? what algorithm should
i use?
Thanks a lot,
Vladimir.

**[Help-gsl] finding roots, solving ODEs and numerical integration of complex functions**,
*Владимир Дрынкин* **<=**