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If alpha,alpha^2) falls inside the angle...

If `alpha,alpha^2)` falls inside the angle made by the lines `2y=x ,x >0&y=3x ,x >0,` then the set of values of `alpha` is `(-oo,3)` (b) `(1/2,3)` `(0,3)` (d) `(-oo,0)uu[1/2,oo]`

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