例如:A(x)=1+x+7*x^2!+136*x^3/3!+4933*x^4/4!+275536*x^5/5!+21309139*x^6/6!+2137447936*x ^ 7/7!+266227499017*x ^8/8!+。。。
其中A(x/A(x)^2)=exp(x*A(x))和
exp(x*A(x))=1+x+3*x^2/2!+28*x^3/3!+653*x^4/4!+28096*x^5/5!+1833367*x^6/6!+162874048*x^7/7!+。。。
也,
A(x)=exp(x*B(x)^3),其中B(x
B(x)=1+x+11*x^2/2!+292*x^3/3!+13149*x^4/4!+861376*x^5/5!+75412591*x ^6/6!+8365301568*x^7/7!+。。。
B(x)^2=1+2*x+24*x^2/2!+650*x^3/3!+29360*x^4/4!+1918482*x^5/5!+167206144*x^6/6!+。。。
B(x)^3=1+3*x+39*x^2/2!+1080*x^3/3!+49029*x^4/4!+3199728*x^5/5!+277840179*x ^6/6!+。。。
此外,
A(x/C(x)^3)=exp(x
C(x)=1+x+5*x^2/2!+85*x^3/3!+2889*x^4/4!+154441*x^5/5!+11527693*x^6/6!+1120674717*x^7/7!+。。。
C(x)^3=1+3*x+21*x^2/2!+351*x^3/3!+11337*x^4/4!+582843*x ^5/5!+42300765*x^6/6!+。。。
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