We solve polynomials algebraically in order to determine the roots - where a curve cuts the \(x\)-axis. A root of a polynomial function, \(f(x)\), is a value for \(x\) for which \(f(x) = 0\).

This function is considered by Zhou (1998) for the numerical integration of spiky functions. An & Owen (2001) approximate the function in d = 9 dimensions. As they point out, this function is such ...