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时间:2020-04-04
《高中理科数学必背公式.doc》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、高中数学必背公式、常用结论一.二次函数和一元二次方程、一元二次不等式1.二次函数的图象的对称轴方程是,顶点坐标是。2.实系数一元二次方程的解:①若,则;②若,则;③若,它在实数集内没有实数根;在复数集内有且仅有两个共轭复数根.3.一元二次不等式解的讨论:二次函数()的图象一元二次方程有两相异实根有两相等实根无实根R二、指数、对数函数1.运算公式⑴分数指数幂:;(以上,且).3470.83%besidetheeffectivefillinpassengers48fromsurveyofdataview,Ischoolyoungteachersinthe,f
2、emaleteachers34people,maleteachers14people,highout20people;frombyaccountedforproportionview,femaleteachersaccountedforthan70.83%,maleteachers29.17%,ratiooffemaleteachersaccountfor41.66percent.Youngteacherinourschoolcanbeseenintheseriousimbalanceinthesexratio,obviouslytherewiththe
3、currentoutlooksagreaterrelationship.ThisrequirestheattentionofourAdministrativeDepartmentofeducationhighallocationsineducationissues.2ndquestionshowoldyouare()[form]optionissubtotala.under251837.5%b.26-2716816.67%d33.33%C.28-29years.30yearsold612.5%besideeffectivefilloutthepassen
4、gers,48fromsurveydata,ourhighestpercentageunder25yearsofagetheyoungteachers,followedby26-27,28-29,and30yearsofage.Description:youngteacherinourschoolinthehighestpercentageofnewteachers,youngaverageageoftheteachersisalsorelativelylow.Itcanbeseenthatyoungteachersinourschoolisnotsta
5、ble,relativelyhighmobility.Schoolteachers'averageageisrelativelyyoung,iffullyutilized,schoolswillhaveplentyofreserveoftheinvitationstotenderandthetenderfilesandrelatedprovisionsofansweringquestionsandrequests.1.2constructionandconstructionbythesigningoftheconstructioncontract.1.3
6、architecturaldesignInstitute,Hunanprovincedesignscompletedesigndocuments.1.4theconstructionunitofthetender.1.5thedetailedrulesfortheimplementationofprojectsupervision.1.6maintechnicalspecification:codefor13⑵.指数计算公式:;;⑶对数公式:①;②;③;④.⑷.对数的换底公式:.对数恒等式:.2.指数函数的图象和性质a>107、R(2)值域:(0,+∞)(3)过定点(0,1),即x=0时,y=1(4)x>0时,y>1;x<0时,00时,01.(5)在R上是增函数(5)在R上是减函数3.对数函数的图象和性质(3)当x>1时,y>0,0101时,y<0,08、choolyoungteachersinthe,femaleteachers34
7、R(2)值域:(0,+∞)(3)过定点(0,1),即x=0时,y=1(4)x>0时,y>1;x<0时,00时,01.(5)在R上是增函数(5)在R上是减函数3.对数函数的图象和性质(3)当x>1时,y>0,0101时,y<0,08、choolyoungteachersinthe,femaleteachers34
8、choolyoungteachersinthe,femaleteachers34
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