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=4.071x1.286]wLCgIV9Inyr6HA4KUwzc3o8dW+QaqtN8Vh4Ic4T9aKo=[/tex] .
举一反三
- 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].
- 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=6.857x1.286]+8TpnXhNjVA8ASM37C57bPO2VHJACzhdrkBhWbOw8pepTAtBRrxQ67nhgbDgIjYW[/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:[tex=4.571x1.286]wLCgIV9Inyr6HA4KUwzc3oQ8chRS+v5X/lEvFUZAFCU=[/tex] .
- 已知[tex=5.643x1.286]bElEMe94zU3QnY7/pA2k+w==[/tex],[tex=5.5x1.286]WVQLnm7flauRHAS8jmervw==[/tex],求:[tex=0.571x1.286]mRKL/orzOudCEARA8qn3Kw==[/tex]与[tex=0.5x1.286]PGyKeLDo0qv9T0n29ldi6w==[/tex]的夹角 .
- 设[tex=6.571x1.286]l19aK9QOFsSDpXWVCOi/dSGao2AImDxXtP5Hp3q5CRU=[/tex],[tex=5.643x1.286]PC0dT+MVZOf04OcrpkP5zA==[/tex],[tex=5.5x1.286]soHI8Jq8muFMOeLFMEQGVOhkV9FsOs22l9rC5UftnKU=[/tex],求[tex=0.5x1.286]asctJDWpGaq/ETe64ANZ1Q==[/tex]。