SmtC: Show me the Code
Ole Peter Smith
Instituto de Matemática e Estatística
Universidade Federal de Goiás
http://www.olesmith.com.br

Cartesian
Whom takes fun only as fun.
And serious only seriously.
Misunderstood both.
Piet Hein

Scalar product

$\underline{a} =(a_x,a_y)$, $\underline{b} =(b_x,b_y)$: \[ \underline{a} \cdot \underline{b} = a_x b_x + a_y b_y \]
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