又有m1數..問問><"..20分!!

2010-09-04 6:39 pm
Expand the following functions in ascending powers of x up to x^4
(a) f(x)=e^x^2
(b) f(x)=e^x‧e^x^2




我完全唔明點做-.-教教-口-"..最好用d中文解釋><"...
更新1:

STEVIE....b) 第2個步驟去第3個步驟..唔明-.-....可唔可以詳細小小><"

回答 (4)

2010-09-04 11:03 pm
✔ 最佳答案
As follows:


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2010-09-04 18:35:56 補充:
STEP2去STEP3主要係做expansion...
由STEP2:將左邊的括號裡的項逐個乘以右邊括號...但注意最大的次方係去到x^4,所以右邊括號內的項唔需要全部乘哂~

2010-09-04 19:04:55 補充:
你有數學問題都係post係度好d...我唔係成日on msn~
2010-09-05 1:06 am
2010-09-04 7:11 pm
跟住點乘埋一齊- -?

2010-09-04 18:39:38 補充:
嘩..唔該唒你..你真係好勁-.-...小弟佩服!!!

介唔介意留底msn-口-"....我想可以易d問你><"
2010-09-04 6:42 pm
e^x=1 + x + x^2/2! + x^3/3! + x^4/4! +...
=1 + x + x^2/2 + x^3/6 + x^4/24 + ...
e^(x^2) = 1 + x^2 + x^4/2 + ...


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