Linear interpolation - Wikipedia
en.wikipedia.org › wiki › Linear_interpolationLinear interpolation on a set of data points (x 0, y 0), (x 1, y 1), …, (x n, y n) is defined as the concatenation of linear interpolants between each pair of data points. This results in a continuous curve , with a discontinuous derivative (in general), thus of differentiability class C 0 {\displaystyle C^{0}} .