olymmath

Putnam 1988 B2

  • Session B

Prove or disprove: If xx and yy are real numbers with y≥0y\geq0 and y(y+1)≤(x+1)2y(y+1) \leq (x+1)^2, then y(y−1)≤x2y(y-1)\leq x^2.

Curated text Kedlaya Putnam archive. Quoted with source.

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