过点且在横坐标为x点处的切线斜率为的曲线方程为 （ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/6dae7747cb6b423789761b0439eaa705.png
举一反三
- 曲线在点处的切线方程为（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/b7673e320a6a4cb7be6cfa32e0a7151c.png
- 曲线在点处的切线的斜率等于该点横坐标的平方，则曲线所满足的微分方程为。（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/0ba05d14c918497783390923afe6d362.png
- x(t)的频谱为<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/5bcfe4175fcb4fabbdb5f40d00b5343e.png"/>，则<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/45b1670ebd6245ff99cc376a8048a645.png" />的频谱为（ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/09bc7326832a4a1fba983e74c6d85d35.png"/> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/95fca346a74e4a6cbba601cd6d9e26bf.png"/> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/6bf6b83111ad45efac7eb9a37a245c68.png"/> D: 其余选项都不对
- 曲线的拐点为. （ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/a9a518950e9b4b0d82e340179fd3392c.png
- 设，则在点x=0处（ ）https://image.zhihuishu.com/zhs/onlineexam/ueditor/201911/88d2ae5f9788463a8708a18b0e120e86.png