...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,
计算:定积分∫(9 , 4)√x(1+√x)dx求详细过程答案,拜托大神...
∫(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
求定积分∫根号x(1﹢根号x)dx(积分上限为9下限为4)
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
...在下 4)√x\/√x-1 dx求详细过程答案,拜托大神...
√x\/(√x-1 ) ??令t=√x,dx=2tdt则x=4时t=2,x=9时,t=3 原式=∫(在上9 ,在下 4)√x\/√x-1 dx =∫[4,9] (1+ 1\/(√x -1))dx =∫[2,3] t\/(t-1) *2tdt =2∫[2,3] [t+1 +1\/(t-1)] dt =...
定积分∫(0→4)√x\/(1+√ x )dx
如图所示,请采纳。
...在下 4)√x\/√x-1 dx求详细过程答案,拜托大神...
∫(4→9) √x\/√(x - 1) dx,令√x = y,x = y²,dx = 2y dy = ∫(2→3) y\/√(y² - 1) * (2y dy)= 2∫(2→3) y²\/√(y² - 1) dy 再令y = secz,dy = secztanz dz,y > 0 = 2∫(π\/3→arcsec(3)) sec²z\/tanz * (...