已知向量[tex=5.643x1.286]2HKJ+34uBXu3DbhHKLrGKQ==[/tex]，[tex=5.5x1.286]YxBSYjqnkOglv+HFGSt5XQ==[/tex]，[tex=5.5x1.286]A94SJl+klKm/VJjddX9d+A==[/tex]，求：[tex=4.571x1.286]wLCgIV9Inyr6HA4KUwzc3oQ8chRS+v5X/lEvFUZAFCU=[/tex] . 

已知向量[tex=5.643x1.286]2HKJ+34uBXu3DbhHKLrGKQ==[/tex]，[tex=5.5x1.286]YxBSYjqnkOglv+HFGSt5XQ==[/tex]，[tex=5.5x1.286]A94SJl+klKm/VJjddX9d+A==[/tex]，求：(1)[tex=6.786x1.286]TkoPO9ooAPZE8kDX0Ksl4/ZY708Rsy7drjUyImg7U8k=[/tex]；(2)[tex=4.071x1.286]wLCgIV9Inyr6HA4KUwzc3o8dW+QaqtN8Vh4Ic4T9aKo=[/tex]；(3)[tex=4.571x1.286]wLCgIV9Inyr6HA4KUwzc3oQ8chRS+v5X/lEvFUZAFCU=[/tex]；(4)[tex=6.857x1.286]+8TpnXhNjVA8ASM37C57bPO2VHJACzhdrkBhWbOw8pepTAtBRrxQ67nhgbDgIjYW[/tex]．