根据下图的数据，利用一元线性回归模型 y=a+b*ln(x)预测当销售额 29.5 时，流通率 保留一位小数的预测值为()。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/fdc0e958ae364a038622b646c1fde537.png
举一反三
- 根据下图的数据，利用一元线性回归模型 y=a+b*x 预测当销售额 29.5 时，流通率保留一位小数的预测值为（ ）。https://image.zhihuishu.com/zhs/onlineexam/ueditor/201910/fd77a30187714879a77e15cbf869f8dc.png
- 根据下图的数据，利用一元线性回归模型y=a+bx预测当区内大学生数为2.1时，季度销售额保留一位小数的预测值为()。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201808/c20cdfc2bc294ec2845a0d57b9038206.png
- 根据下图的数据，利用一元线性回归模型y=a+bx预测当区内大学生数为2.1时，季度销售额保留一位小数的预测值为（??）。??
- 设<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/caa2009d65b9414e9eee2f311038ed51.png"/> 为系统输入，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/af57e24c7bb247e29a81996211b39e9d.png"/>为系统输出，则下列关系式中为线性时不变系统的是（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/6d8d3ed4bbb5472d8ad95cf86ff40033.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/553b7fd10b744a38859127a91414813b.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/e59a6933e2c647d4b5c12b2ebb0a0ff6.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/4835c010dc244facb01784095e9bd080.png"/>
- 有一LTI离散系统，其差分方程为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/56de766141c64b2f93809c0d9a707900.png" />其传输算子为？ A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/47db6248d80c41579452e5265852f031.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/d3ee5176fb5d4c55af1b973b3bb6c66b.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/10f3f84e8c0648d292fdfd7a07edac2e.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/6c0a80355cf4445b89706482a3cd4891.png" />