Thinking Cap

Problem of the Month

Winners of the academic year 2023/24 is Jacob Norris.

April 2025

Spring polynomials

Let p(x) be a polynomial of degree n with only real coefficients and only real zeroes. Prove that for every x, the inequality (n-1)(p'(x))2≥ np(x)p''(x) holds and then characterize the polynomials for which equality occurs.