Figure 1

(a) Schematic description of weights \({w}_{j}^{\left(\alpha \right)}\) (for j = 1, 2, …, N) in estimating the fractional derivative \({D}_{t}^{\alpha }f\left({t}_{N}\right)\) and (b) weights as a function of j.

(a) Schematic description of weights \({w}_{j}^{\left(\alpha \right)}\) (for j = 1, 2, …, N) in estimating the fractional derivative \({D}_{t}^{\alpha }f\left({t}_{N}\right)\) and (b) weights as a function of j.