Dual lattice: Difference between revisions

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w1 = brd.create('arrow', [[0,0], function() {
w1 = brd.create('arrow', [[0,0], function() {
     return [-1,-1];
     var num = b1.X() * b2.Y() - b2.X() * b1.Y();


}], {});
    return [b2.Y() / num,  -b2.X() / num];
 
}], {strokeColor: 'red'});





Revision as of 15:06, 16 June 2016