首页 > 中学英语试题 > 题目详情
AP微积分题目.A street light is at the top of a 12.0 ft. tall pole
题目内容：
AP微积分题目.
A street light is at the top of a 12.0 ft. tall pole. A man 5.0 ft tall walks away from the pole with a speed of 4.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 42 feet from the pole?
只给答案也可以.为什么我反复算都说45/14但是不对.
AP微积分题目.
A street light is at the top of a 12.0 ft. tall pole. A man 5.0 ft tall walks away from the pole with a speed of 4.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 42 feet from the pole?
只给答案也可以.为什么我反复算都说45/14但是不对.
A street light is at the top of a 12.0 ft. tall pole. A man 5.0 ft tall walks away from the pole with a speed of 4.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 42 feet from the pole?
只给答案也可以.为什么我反复算都说45/14但是不对.
本题链接：