论文部分内容阅读
三角函数问题公式多,题型丰富,隐含条件隐蔽,常给解题带来困难,造成错误.下面例说常见错误并予以剖析,望有所获. 1.概念不清致误例l 已知振动量y的函数表达式为
There are many formulas for trigonometric functions, and the types of questions are rich. Implicit conditions are hidden. It often brings difficulties in solving problems and causes mistakes. The following examples describe common mistakes and analyze them, and hope to obtain them. The function expression of the vibration quantity y is