| 答非所问的速度改变辨析 |
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| 引用本文： | 陶印修,;张艳松.答非所问的速度改变辨析[J].天津成人高等学校联合学报,2014(5):96-97. |
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| 作者姓名： | 陶印修 ;张艳松 |
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| 作者单位： | [1]天津渤海职业技术学院,天津300221; [2]天津商务职业学院,天津300221 |
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| 摘 要： | 拜读某高等数学教材中发现了答非所问的速度改变问题，该教材某例题把速率改变的结果当成了速度改变的结果，因此有必要澄清加速与减速是对速率改变而言，而速度单增与速度单减是对速度改变而言。借助函数单调性判定定理，澄清用的符号判定速度改变（速度单增（或速度单减）），而非判定速率改变（加速（或减速）），完善该实例。本文进一步解决了如何用构造的符号判定速率改变的问题。有意思的是加速与减速，可能是速度单增，也可能是速度单减，体味数学中关于正（或负）号美。
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| 关 键 词： | 加速 减速 判定速度改变 判定速率改变 正(或负)号美 |
Analysis on Wrong Answer to the Question |
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| Institution: | TAO Yin-xiu, ZHANG Yan-song ( 1. Tianjin Urban Construction of Tianjin University, Tianjin 300221 ; 2. Sino - Germany Vocational and Technical College of Tianjin , Tianjin, 300221 ) |
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| Abstract: | with the reading of some advanced math material found in the speed of answering the same questions ,which some examples change the rate of speed as a result of a change in the results , therefore it is necessary to clarify the acceleration and deceleration is the rate of change and speed of l and the speed reduction is speed changing .With the help of function monotonicity theorem ,clarify the symbols used to determine velocity change （speed of l （or speed reduction ）） ,rather than determining rate changes （Acceleration （or deceleration） ,complete the instance .It is further addressed in this paper how to construct symbols to determine rate of change problems .What’s interesting is acceleration and deceleration ,speed may be single increasing ,may also be the speed reduction ,taste of mathematics on the positive （or negative ） . |
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| Keywords: | accelerated slowing determine the sl~eed changes determining rate changes positive （or negative） |
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