Re: [微分] 極值問題2
※ 引述《Qmmm (．．Ｑ3Ｍ．．)》之銘言：
: f' = (10/3)((x-1)^(-1/3))- (10/3)((x-1)^(2/3))
: = (10/3) (2 - x)((x-1)^(-1/3)) = 0或不存在
: => x = 1,2 (critical points)
: x | | 1 | | 2 |
: -------------------------
: f'| - | X | + | 0 | -
: -------------------------
: f | ↘ | 0 | ↗ | 3 | ↘
: 由圖表得知
: f(1)=0 為相對極小值
: {
: f(2)=3 為相對極大值
: f(-∞)=∞為絕對極大值
: {
: f(∞)=-∞為絕對極小值
^^^^^^^^^^^^^^^^^^^^^^^
就算只是因為不好寫你也要註明吧...
再來正無窮大到底是多少?
它是一個實數值嗎? 如果不是,怎麼可以說它是"值"
我有個問題提出來給你看看
(True or false)
If function f is strictly increasing or strictly decreasing in some open
interval I(ex:(a,b)) then f doesn`t have any local maximum value and
local mimimum on I.
有錯請指教囉!
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◆ From: 118.233.32.58
※ 編輯: zptdaniel 來自: 118.233.32.58 (11/21 13:22)
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