如图,点A,B在直线MN上,AB=11厘米,圆A ,圆B的半径均为1厘米.圆O以每秒2厘米的速度自左向右运动,与此同时,圆B的半径也不断增大,其半径r(cm)与时间t(秒)之间的关系式为r=1+t(t>=0).问:点A出发多少
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![如图,点A,B在直线MN上,AB=11厘米,圆A ,圆B的半径均为1厘米.圆O以每秒2厘米的速度自左向右运动,与此同时,圆B的半径也不断增大,其半径r(cm)与时间t(秒)之间的关系式为r=1+t(t>=0).问:点A出发多少](/uploads/image/z/6579644-68-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%82%B9A%2CB%E5%9C%A8%E7%9B%B4%E7%BA%BFMN%E4%B8%8A%2CAB%3D11%E5%8E%98%E7%B1%B3%2C%E5%9C%86A+%2C%E5%9C%86B%E7%9A%84%E5%8D%8A%E5%BE%84%E5%9D%87%E4%B8%BA1%E5%8E%98%E7%B1%B3.%E5%9C%86O%E4%BB%A5%E6%AF%8F%E7%A7%922%E5%8E%98%E7%B1%B3%E7%9A%84%E9%80%9F%E5%BA%A6%E8%87%AA%E5%B7%A6%E5%90%91%E5%8F%B3%E8%BF%90%E5%8A%A8%2C%E4%B8%8E%E6%AD%A4%E5%90%8C%E6%97%B6%2C%E5%9C%86B%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B9%9F%E4%B8%8D%E6%96%AD%E5%A2%9E%E5%A4%A7%2C%E5%85%B6%E5%8D%8A%E5%BE%84r%28cm%29%E4%B8%8E%E6%97%B6%E9%97%B4t%28%E7%A7%92%EF%BC%89%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%E5%BC%8F%E4%B8%BAr%3D1%2Bt%28t%3E%3D0%29.%E9%97%AE%EF%BC%9A%E7%82%B9A%E5%87%BA%E5%8F%91%E5%A4%9A%E5%B0%91)
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