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质点的运动轨迹常可以通过曲线方程来描述。在解物理题的过程中,巧妙地运用曲线方程的知识,不仅使一些问题得以迅速解决,还可提高应用数学知识解决问题的能力。现从下述两个方面说明之。一、圆锥曲线及其切线方程的应用例1.现用一枪对一竖直靶壁射击,子弹恰好可垂直射入靶墙中,该枪口距靶的水平距离为s,子弹出枪口的速度为v。若子
The trajectory of a particle can often be described by a curve equation. In the process of solving physical problems, the clever use of knowledge of the curve equation not only enables some problems to be resolved quickly, but also improves the ability to apply mathematical knowledge to solve problems. This is illustrated by the following two aspects. First, the application of the conic curve and its tangent equations Example 1 is now using a shot against a vertical target wall, the bullet just can be perpendicularly injected into the target wall, the gun’s horizontal distance from the target is s, the child ejects the muzzle The speed is v. If