对y'进行积分就得到了
y=ln(1-2x)y'= -2/(1-2x)y'' =-4/(1-2x)^2 y''' = -16/(1-2x)^3y^(n)(x) = -(n-1)!. 2^n/(1-2x)^ny^(n)(0) = -(n-1)!. 2^n