Post 1Katex in MDX demoFor a function f :R→Rf \colon \R \to \Rf:R→R, the derivative f′(x)f'(x)f′(x) is defined byf′(x)=limh→0f(x+h)−f(x)h.f'(x) = \lim_{h \to 0} \frac{f(x + h) - f(x)}{h}.f′(x)=h→0limhf(x+h)−f(x).