Remember, to find the equation of a line you need a point \((a,b)\) and the gradient \(m\). This determines the gradient of the required line. Use B\((6,3)\) and \(m\). The perpendicular bisector ...

We simply re-order the data points so that we still straddle the root, take another bisection step, and repeat the process. Eventually, we get a useable interpolant. If the terms in Equations 12 and ...