DownloadsDownloadGlossarychain ruleIf h(x)=f(g(x))h(x) = f(g(x))h(x)=f(g(x)), then h′(x)=f′(g(x)) g′(x)h'(x) = f'(g(x))\,g'(x)h′(x)=f′(g(x))g′(x) provided the derivatives exist.interpolantA function constructed to match given data at specified points (e.g., polynomial, spline).CoreInterpolantsBlogBlog example