= Varignon 1687 = Varignon, Pierre (1687): Projet d' une nouvelle mechanique [http://libcoll.mpiwg-berlin.mpg.de/elib/all_documents/TP04WPNS ECHO], [http://echo.mpiwg-berlin.mpg.de/ECHOdocuView?url=/mpiwg/online/permanent/library/TP04WPNS New ECHO] Part of [wiki:WO4]. Sent with DESpecs version 1.1.2. Sent: yes/date. Returned: yes, [http://pythia.mpiwg-berlin.mpg.de/department1/mpdl/raw-texts/WO4_Varignon_1687.txt/WO4_Varignon_1687_V1.txt raw text]. == 1. First Analysis == === Difficulties === === Special Instructions === == 2. Questions From Formax == Q A == 3. Analysis of the Result == === Findings === Check thoroughly, if [http://libcoll.mpiwg-berlin.mpg.de/libcoll_zogilib?fn=/permanent/library/TP04WPNS/pageimg&pn=62&ws=1&wx=0.155&wy=0.2043&ww=0.775&wh=0.1414&mk=0.3109/0.2846 this formula] is ok: {{{ que{ # {_x._ R :: _a. b._ \\ R. _y_ :: _d. c._} # Donc {_x. y_ :: _ad. bc._ \\ & \\ _x. x_ + _y_ :: _ad. ad_ + _bc._ # }Donc # {_z._ R :: _e. f._ \\ R. _x_ :: _b. a._} # Donc _z. x_ :: _eb. fa._ }}} === Recommendation === == 4. Post-Processing ==