5m Zen
1 y2
1 y2 pictures 5
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1 y2
integration of 1 y2 dy
1 y2 x2
1 y2 dx dy
1 y2 y
1 y2 3
1 y2 2y
1 y2 weighting
differentiation of 1/y2
1 y2 integration
1 y2
