Maple解偏微分方程，解的化简问题 谢谢

一汪清水

PDE := x(1-x)*(diff(z(x, y), x))/(1-bx)+y(1-y)*(diff(z(x, y), y))/(1-bx)+(1+ay/(1-bx))*z(x, y)-ay*(1-y+ay+b(b-1)*y^2/(1-bx))/(1-bx)^3 = 0
! y; d# P; ^3 v/ b# L) E
# M# Q% v  O! ?6 }' `( rpdsolve(PDE, z(x, y))
# f2 k! L* S: U) J9 [+ E; O; U
z(x, y) = exp(Int(-(1-bx+ay)/x(1-x), x))*Intat(-ay*exp((1-bx+ay)*(Int(1/_f(1-_f), _f)))*(ay-ay*bx+b(b-1)*RootOf(Int(1/_f(1-_f), _f)-Intat(1/_a(1-_a), _a = _Z)-(Int(1/x(1-x), x))+Int(1/y(1-y), y))^2-RootOf(Int(1/_f(1-_f), _f)-Intat(1/_a(1-_a), _a = _Z)-(Int(1/x(1-x), x))+Int(1/y(1-y), y))+RootOf(Int(1/_f(1-_f), _f)-Intat(1/_a(1-_a), _a = _Z)-(Int(1/x(1-x), x))+Int(1/y(1-y), y))*bx+1-bx)/(_f(1-_f)*(-1+bx)^3), _f = x)+exp(Int(-(1-bx+ay)/x(1-x), x))*_F1(-(Int(1/x(1-x), x))+Int(1/y(1-y), y))

9 k; }+ @) V8 B% D: h# r这个解太长了，含有很多积分，而且还有好几个rootof
能否将解进行一下简化呢？该如何简化，求指点
( R& O. A1 A& ^4 p8 f, ^  P& g0 z

madio

使用remove_RootOf试试看