论文部分内容阅读
高中数学新教材第一册 (下 )的“研究性课题 :向量在物理中的应用”中的渡河问题 ,教材是“根据向量的平行四边形法则和解直角三角形的知识” ,利用正弦定理、余弦定理求解的 ,笔者认为此解法没有充分体现本节的意图用“向量有关知识研究物理中的相关问题” ,特给出此问题的向
The problem of cross-river in the “Study subject: Vector application in physics” of the new high school mathematics textbook 1 (below), the textbook is “Knowledge of parallel triangles based on vectors and solving knowledge of right triangles”, using sine theorem, cosine theorem For the solution, the author believes that this solution does not fully reflect the intent of this section to use “vector-related knowledge to study related issues in physics”.