1.已知空間直角坐標(biāo)系O-xyz中,
=
(
1
,
2
,
3
)
,
=
(
2
,
1
,
2
)
,
=
(
1
,
1
,
2
)
,點(diǎn)Q在直線OP上運(yùn)動(dòng),則當(dāng)
取得最小值時(shí),點(diǎn)Q的坐標(biāo)為( ?。?/div>
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