Anonymous
Anonymous asked in 社會與文化語言 · 1 decade ago

微積分高手......急.....

很急需要請各位微積分高手幫幫我吧......須有演算過程.....

1. find the average value of f(x)=xex/(1+X)2 [(1+x)的平方分之x乘e的x次方] over the terval [0 ,1 ]

2. find volume of the solid obtained by revolving the region bounded by the curves

y=x2(y=的平方) and y=2x-x2 (y=2x-x的平方) about the x-axis

3. evaluate the integral ∫e-x2dx (電腦不好表示....用文字敘述......對e的-x平方積分) as an infinite series

Update:

哈囉....很高興你的回答.....但第二題是要求體積......你算ㄉ好像是面積......

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