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Annotation of loncom/html/res/adm/pages/math_example.tex, revision 1.1

1.1     ! albertel    1: $$r = \frac{n\sum xy-(\sum \pi)\cdot (\sum \mu)}{\sqrt{\left( n\sum
        !             2: phi^{2}-\left( \sum x\right) ^{2}\right) \cdot \left( n\sum y^{2}-\left(
        !             3: \sum y\right) ^{2}\right) }}$$