題目列表(包括答案和解析)
動點(diǎn)A(x,y)在圓上繞坐標(biāo)原點(diǎn)沿逆時針方向勻速旋轉(zhuǎn),12秒旋轉(zhuǎn)一周.已知時間t=0時,點(diǎn)A的坐標(biāo)是(,),則當(dāng)0≤t≤12時,動點(diǎn)A的縱坐標(biāo)y關(guān)于 t(單位:秒)的函數(shù)的單調(diào)遞增區(qū)間是___________.
動點(diǎn)A(x,y)在圓上繞坐標(biāo)原點(diǎn)沿逆時針方向勻速旋轉(zhuǎn),12秒旋轉(zhuǎn)一周.已知時間t=0時,點(diǎn)A的坐標(biāo)是(,),則當(dāng)0≤t≤12時,動點(diǎn)A的縱坐標(biāo)y關(guān)于 t(單位:秒)的函數(shù)的單調(diào)遞增區(qū)間是___________.
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A、[0,1] |
B、[1,7] |
C、[7,12] |
D、[0,1]和[7,12] |
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