高中数学代数与函数一函数练习题29
题目内容

设函数f(x)= http://picflow.koolearn.com/upload/2013-06/20/90980978-28dd-4512-ae26-02a13f5be96d/paper.files/image019.png-lnx,则y=f(x)

2021-07-26

A.在区间(http://picflow.koolearn.com/upload/2013-06/20/90980978-28dd-4512-ae26-02a13f5be96d/paper.files/image020.png,1),(1,e)内均有零点

B.在区间(http://picflow.koolearn.com/upload/2013-06/20/90980978-28dd-4512-ae26-02a13f5be96d/paper.files/image020.png,1),(1,e)内均无零点

C.在区间(http://picflow.koolearn.com/upload/2013-06/20/90980978-28dd-4512-ae26-02a13f5be96d/paper.files/image020.png,1)内有零点,在区间(1,e)内无零点

D.在区间(http://picflow.koolearn.com/upload/2013-06/20/90980978-28dd-4512-ae26-02a13f5be96d/paper.files/image020.png,1)内无零点,在区间(1,e)内有零点

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