考验你们智商的时候到了 一道英文数学题 同时考验你们的英文 和 A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possibl

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考验你们智商的时候到了 一道英文数学题 同时考验你们的英文 和 A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possibl

考验你们智商的时候到了 一道英文数学题 同时考验你们的英文 和 A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possibl
考验你们智商的时候到了 一道英文数学题 同时考验你们的英文 和
A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possible.He could row his boat directly across the river to point C and then run to B,or he could row directly to B,or he could row to some point D between B and C and then run to B.If he can row 6 km/h and run 8 km/h,where should he land to reach B as soon as possible?(We assume that the speed of the water is negligible compared to the speed at which the man rows.)
1 km from C

考验你们智商的时候到了 一道英文数学题 同时考验你们的英文 和 A man launches his boat from point A on a bank of a straight river,1 km wide,and wants to reach point B,1 km downstream on the opposite bank,as quickly as possibl
最快是A直接到B,时间 (根号2)/6
楼上的x已经大于1了,所求不再是最小值

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