若<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23817892_0.png">的收敛域是（－8，8]，则<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23817892_0_1.png">的收敛半径及<img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251103/23817892_0_2.png">的收敛域分别是（　　）。