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The parabolas y^2=4xa n dx^2=4y divide t...

The parabolas `y^2=4xa n dx^2=4y` divide the square region bounded by the lines `x=4,y=4` and the coordinate axes. If `S_1,S_2,S_3` are the areas of these parts numbered from top to bottom, respectively, then `S_1: S_2-=1:1` (b) `S_2: S_3-=1:2` `S_1: S_3-=1:1` (d) `S_1:(S_1+S_2)=1:2`

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