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## Re: [ff3d-users] P2 finite elements

**From**: |
Stephane Del Pino |

**Subject**: |
Re: [ff3d-users] P2 finite elements |

**Date**: |
Mon, 5 Feb 2007 08:44:55 +0100 |

**User-agent**: |
KMail/1.9.5 |

Hi,
Le lundi 5 février 2007 02:49, Timothy Cox a écrit :
>* Can I set up a P2 function using a formula like:*
>* femfunction f(M)=x^2;*
If you do this you will interpolate the function x^2 on a P1 function space.
But, you can do it.
>* if so how?*
femfunction f(M:P2)=x^2;
will do what you want. Note that available keywords are P0, P1(default) and
P2. If the mesh M is a mesh of hexahedra, this will build a Q2 function.
You can also solve problems with this kind of element :
solve(u:P2) in ...
or compute integrals :
int[M:P2](...
there are examples in the exercises from Sevilla that you can download from
http://www.freefem.org/ff3d/index.html
Best regards,
Stéphane.