4 thanks .

来源：学生作业帮编辑：搜搜考试网作业帮分类：数学作业时间：2024/08/03 05:01:40

解题思路：函数图像应用。。。。。。。。。。。。。。。。。。。。。。。。。
解题过程：
#

最终答案：B

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