2.
已知\(e\)\({\,\!}_{1}\),\(e\)\({\,\!}_{2}\)是平面内两个不共线的非零向量,\(\overrightarrow{AB}\)\(=2e\)\({\,\!}_{1}\)\(+e\)\({\,\!}_{2}\),\(\overrightarrow{BE}\)\(=-e\)\({\,\!}_{1}\)\(+λe\)\({\,\!}_{2}\),\(\overrightarrow{EC}\)\(=-2e\)\({\,\!}_{1}\)\(+e\)\({\,\!}_{2}\),且\(A\),\(E\),\(C\)三点共线.
\((1)\)求实数\(λ\)的值;
\((2)\)若\(e_{1}=(2,1)\),\(e_{2}=(2,-2)\),求\(\overrightarrow{BC}\)的坐标;
\((3)\)已知\(D(3,5)\),在\((2)\)的条件下,若\(A\),\(B\),\(C\),\(D\)四点按逆时针顺序构成平行四边形,求点\(A\)的坐标.