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10 0 dividing vector(a,b) by sqrt(x) gives (a/x*sqrt(x),b/x*sqrt(x)) ( 2015-03-02 12:27:14 +0200 )

2 0 dividing vector(a,b) by sqrt(x) gives (a/x*sqrt(x),b/x*sqrt(x)) ( 2015-03-01 01:44:14 +0200 )