27．已知函数f(x)={x2+2x−3,x⩽0−2+lnx,x>0f(x)=\left\{\begin{array}{l}{x}^{2}+2x-3,x\leqslant 0\\ -2+lnx,x>0\end{array}\right.f(x)={x2+2x−3,x⩽0−2+lnx,x>0，当方程f(x)=kf(x)=kf(x)=k有3个实数解时，kkk的取值范围是 ___(−4(-4(−4[，]−3]-3]−3]___．