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发表于 2021-5-29 11:55
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本帖最后由 yangchuanju 于 2021-5-29 11:59 编辑
(接上楼)
计算跨距36的最密11生素数时要用到∫1/ln(x)^11 dx,将上述各式依次展开得:
∫1/ln(x) dx = ln |ln(x)| +ln(x) +ln(x)^2/(2*2 !) +ln(x)^3/(3*3!) +…,
∫1/ln(x)^2 dx = -x/ln(x) + ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…
∫1/ln(x)^3 dx = -1/2*x/ln(x)^2 -1/2*x/ln(x) + 1/2*[ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^4 dx = -1/3*x/ln(x)^3 -1/6*x/ln(x)^2 -1/6*x/ln(x) +1/6*[ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^5 dx = -1/4*x/ln(x)^4 -1/12*x/ln(x)^3 -1/24*x/ln(x)^2 -1/24*x/ln(x) +1/24*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^6 dx = -1/5*x/ln(x)^5 -1/20*x/ln(x)^4 -1/60*x/ln(x)^3 -1/120*x/ln(x)^2 -1/120*x/ln(x) +1/120*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^7 dx = -1/6*x/ln(x)^6 -1/30*x/ln(x)^5 -1/120*x/ln(x)^4 -1/360*x/ln(x)^3 -1/720*x/ln(x)^2 -1/720*x/ln(x) +1/720*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^7 dx = -1/6*x/ln(x)^6 -1/30*x/ln(x)^5 -1/120*x/ln(x)^4 -1/360*x/ln(x)^3 -1/720*x/ln(x)^2 -1/720*x/ln(x) +1/720*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^8 dx = -1/7*x/ln(x)^7 -1/42*x/ln(x)^6 -1/210*x/ln(x)^5 -1/840*x/ln(x)^4 -1/2520*x/ln(x)^3 -1/5040*x/ln(x)^2 -1/5040*x/ln(x) +1/5040*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^8 dx = -1/7*x/ln(x)^7 -1/42*x/ln(x)^6 -1/210*x/ln(x)^5 -1/840*x/ln(x)^4 -1/2520*x/ln(x)^3 -1/5040*x/ln(x)^2 -1/5040*x/ln(x) +1/5040*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^9 dx = -1/8*x/ln(x)^8 -1/56*x/ln(x)^7 -1/336*x/ln(x)^6 -1/1680*x/ln(x)^5 -1/6720*x/ln(x)^4 -1/20160*x/ln(x)^3 -1/40320*x/ln(x)^2 -1/40320*x/ln(x) +1/40320*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^10 dx = -1/9*x/ln(x)^9 -1/72*x/ln(x)^8 -1/504*x/ln(x)^7 -1/3024*x/ln(x)^6 -1/15120*x/ln(x)^5 -1/60480*x/ln(x)^4 -1/181440*x/ln(x)^3 -1/362880*x/ln(x)^2 -1/362880*x/ln(x) +1/362880*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
∫1/ln(x)^11 dx = -1/10*x/ln(x)^10 -1/90*x/ln(x)^9 -1/720*x/ln(x)^8 -1/5040*x/ln(x)^7 -1/30240*x/ln(x)^6 -1/151200*x/ln(x)^5 -1/604800*x/ln(x)^4 -1/1814400*x/ln(x)^3 -1/3628800*x/ln(x)^2 -1/3628800*x/ln(x) +1/3628800*[ ln |ln(x)| +ln(x) +ln(x)^2/(2*2!) +ln(x)^3/(3*3!) +…]
…………
各项系数的分母:
1——1
2——1,1
3——2,2,2
4——3,6,6,6
5——4,12,24,24,24
6——5,20,60,120,120,120
7——6,30,120,360,720,720,720
8——7,42,210,840,2520,5040,5040,5040
9——8,56,336,1680,6720,20160,40320,40320,40320
10——9,72,504,3024,15120,60480,181440,362880,362880,362880
11——10,90,720,5040,30240,151200,604800,1814400,3628800,3628800,3628800
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