名校
解题方法
1 . 已知函数
的定义域为
,若对于任意
分别为某个三角形的边长,则称
为“三角形函数”,其中为“三角形函数”的函数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381b3224709c08e8266886705b54fa23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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解题方法
2 . 将扇形
的圆弧
拉直后,恰得一边长为2的等边三角形,利用泰勒公式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce236ca879f7c7b927a56f0a37d65ee3.png)
的前三项,求扇形
中
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce236ca879f7c7b927a56f0a37d65ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd21260aab06c2e6b94eb759b922b2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28663365503449e01ac156ebd1105ab6.png)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次