Re: [問卦] 大學畢業後忽然對數學有興趣該怎麼救?消失
數學哦,你說的是
Prove that the following statements are equivalent: let S be dense in R,
for a given sequence {xn},
(i) if for every 0 < ε∈ S, there exists N ∈ N such that
|xn - x| < ε whenever n ≧ N.
(ii) if for every 0 < ε∈ R, there exists N ∈ N such that
|xn - x| < ε whenever n ≧ N.
這種
還是,
Determine whether the given differential equation is exact, if it is exact,
solve it.
(x - y^3 + y^2.sinx ) dx = (3xy^2 + 2y.cosx) dy
這種
還是,
Let X1, . . . , Xn be a random sample of size n from a distribution that is
N(μ, σ^2), where σ^2 > 0. Show that the sum Zn = Σ Xi , i = 1:n , does not
have a limiting distribution.
這種?
啊,會不會是,
設a、b為兩相異正整數,且500 < a < 600,若log3 a、log9 b、log27 a成等差
數列,則b=?
這種?
如果你喜歡的是第四種,那你喜歡的不是數學,是錯覺,謝謝
※ 引述《GuyFawkes (Guy Fawkes)》之銘言:
: 以前沒學好
: 誤入歧途
: 現在才後悔
: 怕已經來不及了QQ
: 大學畢業後忽然對數學有興趣該怎麼救?
: 想把數學當二專
--
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推
12/08 17:22, , 1F
12/08 17:22, 1F
推
12/08 17:22, , 2F
12/08 17:22, 2F
第一是高微範圍,第二是上學期工數微分方程,第三是數理統計,第四是高中數學
噓
12/08 17:22, , 3F
12/08 17:22, 3F
推
12/08 17:22, , 4F
12/08 17:22, 4F
推
12/08 17:23, , 5F
12/08 17:23, 5F
推
12/08 17:24, , 6F
12/08 17:24, 6F
推
12/08 17:24, , 7F
12/08 17:24, 7F
推
12/08 17:24, , 8F
12/08 17:24, 8F
推
12/08 17:24, , 9F
12/08 17:24, 9F
→
12/08 17:25, , 10F
12/08 17:25, 10F
已經蠻準的了
推
12/08 17:25, , 11F
12/08 17:25, 11F
對啊,這大概大二程度吧
推
12/08 17:25, , 12F
12/08 17:25, 12F
推
12/08 17:26, , 13F
12/08 17:26, 13F
推
12/08 17:26, , 14F
12/08 17:26, 14F
推
12/08 17:29, , 15F
12/08 17:29, 15F
→
12/08 17:29, , 16F
12/08 17:29, 16F
因為漏掉了哈哈,是epsilon
推
12/08 17:29, , 17F
12/08 17:29, 17F
dense應該是高微開頭的建構實數才會教到,不過極限的解題概念是初微就有沒錯
推
12/08 17:32, , 18F
12/08 17:32, 18F
→
12/08 17:32, , 19F
12/08 17:32, 19F
→
12/08 17:32, , 20F
12/08 17:32, 20F
epsilon一直跑掉QQ
推
12/08 17:32, , 21F
12/08 17:32, 21F
推
12/08 17:34, , 22F
12/08 17:34, 22F
高等數學就是用來超越經驗的沒錯
推
12/08 17:34, , 23F
12/08 17:34, 23F
→
12/08 17:35, , 24F
12/08 17:35, 24F
→
12/08 17:35, , 25F
12/08 17:35, 25F
推
12/08 17:35, , 26F
12/08 17:35, 26F
→
12/08 17:35, , 27F
12/08 17:35, 27F
→
12/08 17:35, , 28F
12/08 17:35, 28F
推
12/08 17:37, , 29F
12/08 17:37, 29F
推
12/08 17:37, , 30F
12/08 17:37, 30F
→
12/08 17:37, , 31F
12/08 17:37, 31F
→
12/08 17:38, , 32F
12/08 17:38, 32F
還有 29 則推文
還有 5 段內文
→
12/08 18:46, , 62F
12/08 18:46, 62F
回去翻筆記記得起來就好,用不到會忘掉很正常
推
12/08 18:50, , 63F
12/08 18:50, 63F
推
12/08 19:01, , 64F
12/08 19:01, 64F
→
12/08 19:06, , 65F
12/08 19:06, 65F
→
12/08 19:06, , 66F
12/08 19:06, 66F
→
12/08 19:10, , 67F
12/08 19:10, 67F
→
12/08 19:11, , 68F
12/08 19:11, 68F
應該是筆誤沒錯,改了
大一大二那種統計很難讓人喜歡,但資料分析我蠻愛的,應該也會走這方面
修到大三大四才會有感,透過PYTHON或R呈現,比純數有快感的多,我個人感覺
※ 編輯: Sixigma (123.240.59.164), 12/08/2016 19:13:55
推
12/08 19:15, , 69F
12/08 19:15, 69F
→
12/08 19:15, , 70F
12/08 19:15, 70F
噓
12/08 19:17, , 71F
12/08 19:17, 71F
→
12/08 19:17, , 72F
12/08 19:17, 72F
推
12/08 19:31, , 73F
12/08 19:31, 73F
→
12/08 19:31, , 74F
12/08 19:31, 74F
推
12/08 19:51, , 75F
12/08 19:51, 75F
推
12/08 19:52, , 76F
12/08 19:52, 76F
→
12/08 19:52, , 77F
12/08 19:52, 77F
推
12/08 19:53, , 78F
12/08 19:53, 78F
推
12/08 20:05, , 79F
12/08 20:05, 79F
推
12/08 20:19, , 80F
12/08 20:19, 80F
→
12/08 20:19, , 81F
12/08 20:19, 81F
→
12/08 20:19, , 82F
12/08 20:19, 82F
推
12/08 20:23, , 83F
12/08 20:23, 83F
推
12/08 20:26, , 84F
12/08 20:26, 84F
推
12/08 20:37, , 85F
12/08 20:37, 85F
推
12/08 20:47, , 86F
12/08 20:47, 86F
推
12/08 22:26, , 87F
12/08 22:26, 87F
推
12/08 22:45, , 88F
12/08 22:45, 88F
推
12/08 23:05, , 89F
12/08 23:05, 89F
推
12/08 23:26, , 90F
12/08 23:26, 90F
推
12/08 23:53, , 91F
12/08 23:53, 91F
推
12/09 00:13, , 92F
12/09 00:13, 92F
→
12/09 00:18, , 93F
12/09 00:18, 93F
推
12/09 01:06, , 94F
12/09 01:06, 94F
推
12/09 01:10, , 95F
12/09 01:10, 95F
推
12/09 07:09, , 96F
12/09 07:09, 96F
→
12/09 15:46, , 97F
12/09 15:46, 97F
推
12/09 19:31, , 98F
12/09 19:31, 98F
噓
12/09 22:54, , 99F
12/09 22:54, 99F
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