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为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行:andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)高中数学常用公式及结论1元素与集合的关系:UxAxCA,UxCAxA.AAØ2集合12{,,,}naaa的子集个数共有2n个;真子集有21n个;非空子集有21n个;非空的真子集有22n个.3二次函数的解析式的三种形式:(1)一般式2()(0)fxaxbxca;(2)顶点式2()()(0)hfxaakx;(当已知抛物线的顶点坐标(,)hk时,设为此式)(3)零点式12()()()(0)fxaxxxax;(当已知抛物线与x轴的交点坐标为12(,0),(,0)xx时,设为此式)(4)切线式:02()()(()),0xkxdfxaxa。(当已知抛物线与直线ykxd相切且切点的横坐标为0x时,设为此式)4真值表:同真且真,同假或假5四种命题的相互关系(下图):(原命题与逆否命题同真同假;逆命题与否命题同真同假.)原命题互逆逆命题若p则q若q则p互互互为为互否否逆逆否否否命题逆否命题若非p则非q互逆若非q则非p充要条件:(1)、pq,则P是q的充分条件,反之,q是p的必要条件;(2)、pq,且q≠p,则P是q的充分不必要条件;(3)、p≠p,且qp,则P是q的必要不充分条件;4、p≠p,且q≠p,则P是q的既不充分又不必要条件。6函数单调性:增函数:(1)、文字描述是:y随x的增大而增大。(2)、数学符号表述是:设f(x)在xD上有定义,若对任意的1212,,xxDxx且,都有12()()fxfx成立,则就叫f(x)在xD上是增函数。D则就是f(x)的递增区间。减函数:(1)、文字描述是:y随x的增大而减小。(2)、数学符号表述是:设f(x)在xD上有定义,若对任意的1212,,xxDxx且,都有12()()fxfx成立,则就叫f(x)在xD上是减函数。D则就是f(x)的递减区间。单调性性质:(1)、增函数+增函数=增函数;(2)、减函数+减函数=减函数;(3)、增函数-减函数=增函数;(4)、减函数-增函数=减函数;注:上述结果中的函数的定义域一般情况下是要变的,是等号左边两个函数定义域的交集。复合函数的单调性:函数单调单调性内层函数↓↑↑↓外层函数↓↑↓↑为搞好山东省交通科学研究所研发基地项目的结算审计工作,我跟踪审计部特针对本项目作如下要求,请各施工单位、供货单位遵照执行:andperformancetestcopiesoftherecord.Ifnecessary,reviewshouldbecarriedout;4)forspringhangers(includedsimplespring,hangersandconstantsupporthangers)itshouldalsoberecognizedassettingandlockingofloads.5)checkthesurfacequality,foldedlayeringandwithoutcracks,rustandotherdefects.5)aftercompletionofthetestandcontroldrawingnumberonebyone,byseriesbaled.Coloralloysteelparts,thepartsmarkinginstallationlocationandrotationaboutthedirectionyouwant.7.3.14.hangersinstallation7.3.14.1hangerlayouta.acleardesignofhangershouldbeinstalledstrictlyinaccordancewiththedrawingsanddesignsshallnotbeinstalledwrong,missing,etc.B.ownarrangementofpipingsupportandhangersetandselectionshouldbebasedoncomprehensiveanalysisofgenerallayoutofpipingsystems;coldinstallationofsteampipewithparticularattentionreservedforcompensationofthermalexpansiondisplacementandorientation.C.supportsystemsshouldberationaltowithstandpipeloads,staticloadandincidentalload;reasonablepipingdisplacement;guaranteedundervariousconditions,stressarewithintheallowedrange.Strength,stiffness,andmeetrequirementstopreventvibrationandsoothingwater,withoutaffectingtheadjacentequipmentmaintenanceandotherpipinginstallationandexpansion.D.equipmentconnectedtotheinterfacetomeetpipelinethrust(torque)limitrequirements;increasethestabilityofpipingsystemstopreventpipeline...Tubewallthickness(mm)2-34-67-10weldformnoslopemouthweldstrengtheningheighth(mm)1-1.51.5-2weldwidthb(mm)5-67-6hasslopemouthweldstrengtheningheighth(mm)1.5-22weldwidthb(mm)coverhadeachedgeslopemouthabout2mmargonarcweldingweldstrengtheningsurfaceheightandwidthtubewallthickness(mm)2--33--45--6weldformweldstrengtheningheighth(mm)1-1.51.5-22-2.5widthb(mm)2复合函数↑↑↓↓等价关系:(1)设1212,,,xxabxx那么1212()()()0xxfxfxbaxfxxxfxf,)(0)()(2121在上是增函数;1212()()()0xxfxfxbaxfxxxfxf,)(0)()(2121在上是减函数.(2)设函数)(xfy在某个区间内可导,如果0)(xf,则)(xf为增函数;如果0)(xf,则)(xf为减函数.7函数的奇偶性:(注:是奇偶函数的前提条件是:定义域必须关于原点对称)奇函数:定义:在前提条件下,若有()()()()0fxfxfxfx或,则f(x)就是奇函数。性质:(1)、奇函数的图象关于原点对称;(2)、奇函数在x0和x0上具有相同的单调区间;(3)、定义在R上的奇函数,有f(0)=0.偶函数:定义:在前提条件下,若有()()fxfx,则f(x)就是偶函数。性质:(1)、偶函数的图象关于y轴对称;(2)、偶函数在x0和x0上具有相反的单调区间;奇偶函数间的关系:(1)、奇函数·偶函数=奇函数;(2)、奇函数·奇函数=偶函数;(3)、偶奇函数·偶函数=偶函数;(4)、奇函数±奇函数=奇函数(也有例外得偶函数的)(5)、偶函数±偶函数=偶函数;(6)、奇函数±偶函数=非奇非偶函数奇函数的图象关于原点对称,偶函数的图象关于y轴对称;反过来,如果一个函数的图象关于原点
本文标题:高中数学公式大全(文科)
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