29.(2023•漳州模拟)已知ΔABC\Delta ABCΔABC,点DDD满足BC→=34BD→\overrightarrow{BC}=\frac{3}{4}\overrightarrow{BD}BC=43BD,点EEE为线段CDCDCD上异于CCC,DDD的动点,若AE→=λAB→+μAC→\overrightarrow{AE}=\lambda \overrightarrow{AB}+\mu \overrightarrow{AC}AE=λAB+μAC,则λ2+μ2\lambda ^{2}+\mu ^{2}λ2+μ2的取值范围是 ___(1,179)({1,\frac{17}{9}})(1,917)___.