![如图所示，A(m，m)和B(n，－n)两点分别在*线OS，OT上移动，且·＝－，O为坐标原点，动点P满足＝＋....]( "如图所示，A(m，m)和B(n，－n)两点分别在*线OS，OT上移动，且·＝－，O为坐标原点，动点P满足＝＋....")
- 问题详情：如图所示，A(m，m)和B(n，－n)两点分别在*线OS，OT上移动，且·＝－，O为坐标原点，动点P满足＝＋.(1)求mn的值；(2)求动点P的轨迹方程，并说明它表示什么曲线？【回答】解(1)由·＝(m，m)·(n，－n)＝－2mn.得－2mn＝－，∴mn＝.(2)设P(x，y)(x>0)，由＝＋，得(x，y)＝(m，m)＋(n，－n)＝(m＋n，m－n)．∴整理得x2－＝4mn，又mn＝，∴P点的轨迹方程为x2－＝1(x>0)．它...
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![BlackBerry OS造句怎么写]( "BlackBerry OS造句怎么写")
- 1、Here,wewillcoverthemobilesmartphoneoperatingsystemBlackBerryOS.2、然而，如果你正在寻找一款“*手机”，你可以考虑摩托罗拉的Droid或是iphone，或者再等待一段时间试用一下RIM的BlackBerryOS6系统效果如何。3、However,ifyouarelookingfora"funphone"youmaywanttocon...
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![OS X造句怎么写]( "OS X造句怎么写")
- ThismeansthatthenewFreeBSDschedulerisnotpresentinOSX.SnowTransformationPackoverhaulstheWindowsinterfacetolooklikeOSX.TheinterfaceforOSX10.0wascalled"Aqua,"andwasinspiredbywaterdropletsYes,I'vefiguredouthowtoswipeatthelatestversionofMacOSX.You'rew...
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![Mac OS X造句怎么写]( "Mac OS X造句怎么写")
- 它可能与您的MacOSX版本不兼容。Itdoesn'trunWindowsorMacOSX,whichmeansitdoesn'tsupportapplicationsdesignedforeitherplatform.TheMacOSXinterfaceisfilledwithphotorealistictouchesthatultimatelydistract(seeFigure14-6).Noneofthisservesusersparticularlywell...
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![Mac OS造句怎么写]( "Mac OS造句怎么写")
- WhosaysMacOSisflawless?WindowsandMacOSaresoldinboxes.它可能与您的MacOSX版本不兼容。ButthehopeisthatApplewillblendthemintotheMacOSratherthangraftthemon.Itdoesn'trunWindowsorMacOSX,whichmeansitdoesn'tsupportapplicationsdesignedforeitherplatform."Att...
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