Solved problems
Roots of a quadratic equation with a parameterEstimating altitude from atmospheric pressureA classical matrix equationLes entiers consécutifs non premiersFRA fair division of the planeThe missing coinThe truncated chessboardRoots of the derivative of a quadratic polynomialTwo triangles nested in a half circleA diagonalizable matrix ?A simpler Pythagorean theoremExistence d’une racine carréeFRThe park problem 2