Abstract: This paper gives an account of the nonlinear superposition principle for classes of nonlinear systems. The existence of a nonlinear superposition principle is ensured by a Lie algebraic ...

Timothy Li is a consultant, accountant, and finance manager with an MBA from USC and over 15 years of corporate finance experience. Timothy has helped provide CEOs and CFOs with deep-dive analytics, ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. David Kindness is a Certified Public Accountant ...

痛点：月底做报表时，公式结果出错直接弹出！、！这些刺眼的红色提示，被老板看到以为你搞砸了工作。 第二参数可以改成 ...