function_graph tracer从function tracer发展而来，function tracer使用“_mcount”插桩可以跟踪到每个函数的调用入口，而function_graph tracer即可以跟踪到函数的入口还可以跟踪到函数的返回。

How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

Thomas S. Shively, Thomas W. Sager, Stephen G. Walker, A Bayesian Approach to Non-Parametric Monotone Function Estimation, Journal of the Royal Statistical Society.