[微積分]兩題微積分英文作業

看板trans_math作者j95300 (吻仔魚切片)時間19年前 (2007/01/07 22:37)推噓1(1推 0噓 3→)

留言4則, 1人參與討論串1/1

Suppose that the range of g lies in the domain of f so that the composite f(g(x)) is defined. If f and g are one-to-one, is f(g(x)) also one-to-one? Give reasons for your answer. Is it true that if summation of a[n] for n from 1 to infinity is a divergent series of positive numbers, then there is also a divergent series b[n] for n from 1 to infinity of positive numbers with b[n] < a[n] for every n? Is there a "smallest" divergent series of positive numbers? Give reasons for your answer. 以上兩題.. 該如何解題? 看不太懂... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.115.213.120

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vu3cj0su3

01/08 06:54, , 1^F

01/08 06:54, 1^F

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vu3cj0su3

01/08 06:55, , 2^F

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vu3cj0su3

01/08 06:56, , 3^F

01/08 06:56, 3^F