切线

Construct an animation of a rectangle whose sides are tangent to a given ellipse/hyperbola.

建构一矩形的动态绘图。矩形的边是给定的椭圆或双曲线的切线。

A neuron in the network produces its output by processing the net input through an activation jfunction f, such as the tangent hyperbolic function chosen in this study as below

在网络里的神经元产生它的生产透过透过活动j处理网输入功能f，例如切线在这研究内选择如下的双曲线功能

Theorem 2: the locus of foot point of the perpendicular line of between the origin and the tangent line of the cylindrical spiral is on the simple leaf camber hyperboloid of one sheet .

定理2 由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹在单叶双曲面上。

The line connecting the point and the center bisects the included angle of the two tangent lines.

这一点和圆心的连线平分这两条切线的夹角。

Mathematical legacy 数学遗产 Descartes' theory provided the basis for the calculus of Newton and Leibniz, by applying infinitesimal calculus to the tangent line problem, thus permitting the evolution of that branch of modern mathematics.

通过对切线问题的极限计算，笛卡尔为牛顿和莱布尼茨的微积分奠定了基础，所以使得这一近代数学分支的发展成为可能。

You can move around the point intersected bu two lines to observe the effect on tangent line.

你可以移动两条直线的焦点，观察切线的变化情形。

By the principle of penalt function, the irrotational fluid field is constrained, and author has proposed the Difference Method for distinguishing fluid vortex modes among the natural modes of coupled systems. Author has calculated the real frequencies with the extra deductive method, and discussed the influence of the numerical solution due to the irrotational constraint.

对于流体有限扰动时的非线性耦合系统的有限元分析作了一些探讨，给出了非线性系统的基本方程、变分原理及有限元方程，并具体地导出了三维几何非线性流体单元的切线刚度公式，采用增量形式的Newmark预报——校正逐步积分法计算系统的动力响应，由Newton-Raphson迭代法及其修正方法求解系统的非线性方程组，还列出了不平衡力余量检查和位移迭代增量检查等迭代收敛判断准则。

Theorem 4 it is not the path of integral but the points and in the locus L that affects the line integral of locus L of foot point of the perpendicular line between the origin and the tangent line of the cylindrical spiral .several corollaries are derived from the theorems mentioned above.

定理4 势量场沿由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹L的线积分与积分路径无关，只与轨迹L上的取的端点与有关。并由以上定理得到了几个推论。

Of the change in the angle of a tangent that moves over a given arc to the length of the arc.

曲''。'率'。''切线通过给定弧线的角度变化与弧线长度之间的比率

2The ratio of the change in the angle of a tangent that moves over a given arc to the length of the arc.

曲率：切线通过给定弧线的角度变化与弧线长度之间的比率

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。