解题方法
1 . 已知函数
,曲线
在
处的切线与直线
垂直.
(1)求
的值.
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d95aa7445ae32ebce0f7aa3a284327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f129d441ab39d195cb2580c46065d0fb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dac0c4f74d16d30a8799b03b41460cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c62b3c44e262862c5d29c0d28ae17c6.png)
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2卷引用:青海省西宁市大通回族土族自治县2022届高三第二次模拟考试数学(理科)试题
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2 . 已知函数f(x)=mx3+x﹣sinx(m∈R).
(1)当m=0时,(i)求y=f(x)在(
,f(
))处的切线方程;
(ii)证明:f(x)<ex;
(2)当x≥0时,函数f(x)单调递减,求m的取值范围.
(1)当m=0时,(i)求y=f(x)在(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de12bbd5097debc83d6a46364589748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de12bbd5097debc83d6a46364589748.png)
(ii)证明:f(x)<ex;
(2)当x≥0时,函数f(x)单调递减,求m的取值范围.
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2019-01-08更新
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2卷引用:青海省西宁市城西区青海湟川中学2022-2023学年高三上学期12月月考文科数学B试题