Google's latest animated Doodle celebrates the quadratic equation, transforming its homepage into an interactive classroom.

Look at the National 4 factorising section before continuing. When a question asks you to 'solve' a quadratic equation, this means that you are to find the roots of the quadratic. In other words, ...

A method is given for calculating the value of Dirichlet $L$-functions near the real axis in the critical strip. As an application, some zeros for zeta functions of ...