计算:定积分∫(在上9 ,在下 4)√x(1+√x)dx求详细过程答案,拜托大神...

如题所述

第1个回答  2012-12-10
解:
∫(4→9)√x(1+√x)dx
=∫(4→9)(√x+x) dx
=[2/3·x^(3/2)+x²/2] |(4→9)
=[2/3·9^(3/2)+9²/2]-[2/3·4^(3/2)+4²/2]
=271/6本回答被提问者采纳

...在下 4)√x(1+√x)dx求详细过程答案,拜托大神...
∫(在上9 ,在下 4)√x(1+√x)dx =∫(在上9 ,在下 4)[√x+x]dx =[2\/3x^(3\/2)+x^2\/2](在上9 ,在下 4)=18+81\/2-16\/3-8 =10+40+1\/2-5-1\/3 =45又1\/6

计算:定积分∫(在上9 ,在下 4)√x(1+√x)dx求详细过程答案...
∫(4→9)√x(1+√x)dx =∫(4→9)(√x+x) dx =[2\/3·x^(3\/2)+x²\/2] |(4→9)=[2\/3·9^(3\/2)+9²\/2]-[2\/3·4^(3\/2)+4²\/2]=271\/6,2,

定积分∫(在上9 ,在下 4)√x(1+√x)dx求详细过程答案、
∫(4→9)√x(1+√x)dx =∫(4→9)(√x+x) dx =[2\/3·x^(3\/2)+x²\/2] |(4→9)=[2\/3·9^(3\/2)+9²\/2]-[2\/3·4^(3\/2)+4²\/2]=271\/6

计算:定积分∫(9 ,4)√x(1+√x)dx求详细过程答案,..?
=2\/3*((1+√x)x^3\/2)|(9,4)-(1\/4)(x^2)|(9,4)如果积分限从4到9那么4*27-3*28-65\/4=31\/4 如果积分限从9到4那么3*28-4*27-65\/4=-161\/4,2,

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∫(9 , 4)√x(1+√x)dx =(2\/3)∫(9,4) (1+x^1\/2)d(x^3\/2)=2\/3*((1+√x)x^3\/2)|(9,4)-(1\/2)∫(9,4)(x^3\/2) (x^-1\/2) dx =2\/3*((1+√x)x^3\/2)|(9,4)-(1\/4)(x^2)|(9,4)如果积分限从4到9那么4*27-3*28-65\/4=31\/4 如果...

求定积分:∫√x(1+√x)dx ,值上限9下限4,步骤详细点
∫√x(1+√x)dx =∫ x+√x dx = x^2 \/2 + x^1.5 \/1.5 代入上限9,下限4 = 81\/2 +27\/1.5 - 16\/2 - 8\/1.5 = 271 \/6

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答:4<=x<=9,设t=√x,2<=t<=3 ∫√x(1+√x)dx =∫t(1+t)d(t^2)=2∫(t^2+t^3)dt =(2\/3)t^3+(1\/2)t^4+C 定积分 =[(2\/3)*27+(1\/2)*81)]-[(2\/3)*8+(1\/2)*16)=117\/2-40\/3 =271\/6

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如图所示,请采纳。

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