【導(dǎo)讀】求底數(shù)進(jìn)行的是開方運(yùn)算。叫做對(duì)數(shù)的底數(shù),常用對(duì)數(shù):我們通常將以10為底的對(duì)數(shù)叫做常用對(duì)數(shù)。真數(shù)N的取值范圍:),0(??
【總結(jié)】2020年高中數(shù)學(xué)對(duì)數(shù)及其運(yùn)算學(xué)案新人教B版必修1知識(shí)與技能:1.理解對(duì)數(shù)的概念,能說明對(duì)數(shù)與指數(shù)的關(guān)系;2.掌握對(duì)數(shù)式與指數(shù)式的互化;3.理解和掌握對(duì)數(shù)運(yùn)算的性質(zhì);。過程與方法:1.通過與指數(shù)式的比較,引出對(duì)數(shù)定義。2.學(xué)會(huì)把未知的問題轉(zhuǎn)化為已知的問題去思考解決。情感態(tài)度與價(jià)值觀:學(xué)會(huì)對(duì)數(shù)式與指
2024-11-19 22:42
【總結(jié)】一般地,如果??1,0??aaa的b次冪等于N,就是Nab?,那么數(shù)b叫做以a為底N的對(duì)數(shù),記作bNa?loga叫做對(duì)數(shù)的底數(shù),N叫做真數(shù)。定義:前課復(fù)習(xí)舉例:1642?????216log4?100102?2100log
2025-01-14 11:35
【總結(jié)】對(duì)數(shù)與對(duì)數(shù)運(yùn)算班級(jí):__________姓名:__________設(shè)計(jì)人__________日期__________課后練習(xí)【基礎(chǔ)過關(guān)】1.若,,,,則正確的是A.B.C.D.2.函數(shù)的定義域?yàn)锳.B.C.D.3.已知,,則的值為A.B.C.D.4
2024-11-28 00:22
【總結(jié)】(1)Nab?底數(shù)冪指數(shù)明確概念指數(shù)式62)3(2)2(6)1(62???xxxxx時(shí)所進(jìn)行的運(yùn)算:,并指出求求下列各式中的6??x?求底數(shù)進(jìn)行的是開方運(yùn)算?64?x求冪進(jìn)行的是乘方運(yùn)算求指數(shù)進(jìn)行的是?運(yùn)算???x這就是我們今天要研究的問
2025-06-05 22:12
【總結(jié)】2.2對(duì)數(shù)函數(shù)2.對(duì)數(shù)與對(duì)數(shù)運(yùn)算第1課時(shí)對(duì)數(shù)[學(xué)習(xí)目標(biāo)],掌握對(duì)數(shù)的基本性質(zhì).,能應(yīng)用對(duì)數(shù)的定義和性質(zhì)解方程.[知識(shí)鏈接]1.328=4,(64)32?=116.2.若2x=8,則x=3;若3x=81,則x=4.[預(yù)習(xí)導(dǎo)引]1.對(duì)數(shù)的概念一般地,如果ax=
2024-12-07 21:18
【總結(jié)】課題:對(duì)數(shù)與對(duì)數(shù)的運(yùn)算精講部分學(xué)習(xí)目標(biāo)展示(1)理解對(duì)數(shù)的概念、常用對(duì)數(shù)及自然對(duì)數(shù)的概念;會(huì)進(jìn)行對(duì)數(shù)式與指數(shù)式的互化;(2)掌握對(duì)數(shù)的運(yùn)算法則,會(huì)進(jìn)行對(duì)數(shù)運(yùn)算;(3)對(duì)數(shù)的換底公式;銜接性知識(shí)1.已知23221xx???,求實(shí)數(shù)x的值解:由已知,得2320xx???,所以1x?或2x?
2024-11-28 15:49
【總結(jié)】下午4時(shí)31分53秒.1對(duì)數(shù)下午4時(shí)31分53秒思考問題一:某個(gè)同學(xué)拿出一張紙,進(jìn)行對(duì)折折紙次數(shù)和層數(shù)有什么關(guān)系?下午4時(shí)31分53秒折紙次數(shù)x層數(shù)N2xN?折紙次數(shù)和層數(shù)的關(guān)系:思考問題一:如果我已經(jīng)知道一共有128層,你能計(jì)算折了多少次嗎?
2025-01-06 16:32
【總結(jié)】§高中數(shù)學(xué)必修①對(duì)數(shù)的運(yùn)算一般地,如果??1,0??aaa的b次冪等于N,就是Nab?,那么數(shù)b叫做以a為底N的對(duì)數(shù),記作bNa?loga叫做對(duì)數(shù)的底數(shù),N叫做真數(shù)。定義:一、復(fù)習(xí)上節(jié)內(nèi)容有關(guān)性質(zhì):⑴負(fù)
2024-11-17 05:39
【總結(jié)】§對(duì)數(shù)函數(shù)2.對(duì)數(shù)與對(duì)數(shù)運(yùn)算第1課時(shí)對(duì)數(shù)課時(shí)目標(biāo),能進(jìn)行指數(shù)式與對(duì)數(shù)式的互化.對(duì)數(shù)的意義.,會(huì)用對(duì)數(shù)恒等式進(jìn)行運(yùn)算.1.對(duì)數(shù)的概念如果ax=N(a0,且a≠1),那么數(shù)x叫做__________________,記作____________,其中a叫做_____
【總結(jié)】對(duì)數(shù)函數(shù)?閱讀教材P102-P104?1、掌握對(duì)數(shù)函數(shù)的概念、圖象和性質(zhì);?2、體會(huì)函數(shù)的思想、分類討論的思想、數(shù)形結(jié)合的思想;自學(xué)提綱(一)對(duì)數(shù)函數(shù)的定義:函數(shù)xyalog?(01)aa??,叫做對(duì)數(shù)函數(shù);其中x是自變量,函數(shù)的定義域是(0,+∞)
2024-11-17 12:00
【總結(jié)】(2)指數(shù)式對(duì)數(shù)式????叫做真數(shù)。叫做對(duì)數(shù)的底數(shù),其中記作的對(duì)數(shù)為底以叫做那么數(shù)且一般地,如果NaNxarithmNaxaaNaax,log,log,1,0????對(duì)數(shù)定義:xx復(fù)習(xí)上節(jié)內(nèi)容有關(guān)性質(zhì):⑴負(fù)數(shù)與零沒有對(duì)數(shù)(∵在指數(shù)式中N0)
2025-06-05 22:30
【總結(jié)】對(duì)數(shù)函數(shù)的圖像和性質(zhì)咸陽師院附屬中學(xué)殷敏一.復(fù)習(xí)對(duì)數(shù)函數(shù)的概念定義:函數(shù)y=logax(a>0,且a≠1)叫做對(duì)數(shù)函數(shù).,其中x是自變量,函數(shù)定義域是(0,+∞)。圖象性質(zhì)yx0y
2024-11-17 17:35
【總結(jié)】對(duì)數(shù)一、選擇題1.已知loga2b=c,則有()A.a(chǎn)2b=cB.a(chǎn)2c=bC.bc=2aD.c2a=b2.下列指數(shù)式與對(duì)數(shù)式互化不正確的一組是()A.e0=1與ln1=0B.813-=12與log812=-13C.log39=2與912=3D.log7
【總結(jié)】對(duì)數(shù)函數(shù)及其性質(zhì)班級(jí):__________姓名:__________設(shè)計(jì)人__________日期__________課后練習(xí)【基礎(chǔ)過關(guān)】1.若,則下列結(jié)論正確的是A.B.C.D.2.已知函數(shù)在上的最大值與最小值之和為,則的值為A.B.3.已知,則的最小值為4.
2024-12-08 01:57
【總結(jié)】對(duì)數(shù)函數(shù)對(duì)數(shù)與對(duì)數(shù)運(yùn)算 5分鐘訓(xùn)練(預(yù)習(xí)類訓(xùn)練,可用于課前) 1.(1)將下列指數(shù)式寫成對(duì)數(shù)式: ①210=1024;②10-3=;③3=;④e0=1. (2)將下列對(duì)數(shù)式寫成指數(shù)式: ①l...
2025-03-09 22:26