This paper discusses the stability of solution of the oblique derivative problem for the nonlinear elliptic system of first order equations.

讨论了一阶非线性椭圆型方程组斜微商问题解的稳定性，这个结果是借助于有关边值问题解的先验估计而导出的。

youdao

This article points out the methods to solve the derivative of piecewise function and discusses the derivative problem at point of demarcation of piecewise function in detail.

本文主要叙述分段函数的求导方法，并对分段函数在分界点处的求导作了细致的讨论。

youdao

The initial regular oblique derivative problem for nonlinear parabolic systems of several second order complex equations with measurable coefficients in a multiply connected domain is discussed.

论述了多连通区域上可测系数的二阶非线性抛物[型]方程组的初-正则斜微商问题。

youdao

Mathematically complete problem is that you can find the function x of t by saying that the second derivative of the function is equal to -k over m times the function.

这个数学问题就是,你可以求出函数 x,只要令函数的二阶导数,等于 -k 除以 m 再乘以函数

耶鲁公开课 - 基础物理课程节选

We did the comparison with the elephant or something; a is the second derivative of x and for this problem, when F is due to a spring, we know the force is that by studying the spring.

我们也已经把它与大象或其它东西作过比较,a 是 x 的二阶导数,在这个问题中,F 是由弹簧产生的,我们在讨论弹簧问题时已经知道了力的大小

耶鲁公开课 - 基础物理课程节选

It greatly magnified and concentrated the mortgage valuation problem, allowed derivative investors to game the system and added to the perception of insolvency for many of the financial institutions which then had to be bailed out.

FORBES: Financial Crisis: Clinton Rooted, Bush Fed, Obama Watered

Its founder, Nicolas Bazan, a 60-year-old neuroscientist, has a seemingly simple and elegant answer to the pain problem: chemically combine a derivative of acetaminophen with a saccharinelike component.

FORBES: Magazine Article

The larger problem is that the perpetrators are still at large and the system that allowed huge derivative gambles on mortgages is still in place.

FORBES: Madoff Has Met His Match: Mortgage Fraud Crime of the Century