求解这道不定积分题 急!1.∫ {(x^4 - 3x^2)/ [(x+5)^3] * (x-3)} dx = ?2 ∫ {(x^4 - 3x^2)/ [(x+5)^2] * (x^2-3x+3)^2} dx = ? 最好能把过程写出来 先谢谢好心人了
求解这道不定积分题 急!
1.∫ {(x^4 - 3x^2)/ [(x+5)^3] * (x-3)} dx = ?
2 ∫ {(x^4 - 3x^2)/ [(x+5)^2] * (x^2-3x+3)^2} dx = ?
最好能把过程写出来 先谢谢好心人了
(1)=1/3*x^3-9*x^2+192*x-1646*log(x+5)-4310/(x+5)+2200/(x+5)^2
= 3 2 4310 2200
1/3 x - 9 x + 192 x - 1646 log(x + 5) - ----- + --------
x + 5 2
(x + 5)
(2)=1/7*x^7-8/3*x^6+147/5*x^5-535/2*x^4+6989/3*x^3-21543*x^2+256108*x-1483930*log(x+5)-1016950/(x+5)
= 7 6 5 4 3 2
1/7 x - 8/3 x + 147/5 x - 535/2 x + 6989/3 x - 21543 x + 256108 x
1016950
- 1483930 log(x + 5) - -------
x + 5
第一行为答案,第二行为美化后的答案
1,∫ {(x^4 - 3x^2)/ [(x+5)^3] * (x-3)} dx = = ∫{x^5-3x^4 - 3x^3 + 9x^2)/ [(x+5)^3]}dx设g(x) = x^5 - 3x^4 - 3x^3 + 9x^2 = (x+5)^5 + a(x+5)^4 + b(x+5)^3 + c(x+5)^2 + e(x+5) + f,f=g(-5)=(-5)^5 - 3*5^4 -...