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OMB造句怎么写
  • OMB造句怎么写

  • 1、OfficeofManagementandBudget(OMB)2、StudyonMechanicalPropertyofHoneycOMB/CorrugateCompositeCardboard;3、InamedtheotherfinalistfortheOMBjob,AliceRivlin,asLeonsdeputy.4、Specifically,sheneedstoknowifsheshouldconcurwiththeOMBrecommendationorgoagainsti...
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如图3所示,曲线段OMB:x2=y(0<x<6)在点x=t(即点M)处的切线PQ交x轴于点P,交线...
  • 如图3所示,曲线段OMB:x2=y(0<x<6)在点x=t(即点M)处的切线PQ交x轴于点P,交线...

  • 问题详情:如图3所示,曲线段OMB:x2=y(0<x<6)在点x=t(即点M)处的切线PQ交x轴于点P,交线段AB于点Q,且BA⊥x轴于点A.图3 (1)试用t表示切线PQ的方程;(2)求△QAP的面积g(t)的表达式.【回答】解:(1)∵y′=2x,∴kPQ=y′|x=t=2t,切线方程为y-t2=2t(x-t),即y=2tx-t2(0<t<6).(2)在切线方程中令y=0,得x=,∴P(,0),...
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