【摘要】對(duì)數(shù)函數(shù)導(dǎo)學(xué)案一、知識(shí)點(diǎn)提要函數(shù)叫對(duì)數(shù)函數(shù),其定義域?yàn)椋?,+∞),值域是R.結(jié)合圖象,熟練掌握對(duì)數(shù)函數(shù)的性質(zhì).(3)熟記以及的圖象及相互關(guān)系,并通過(guò)圖象掌握對(duì)數(shù)的單調(diào)性,注意底對(duì)圖象的影響.(4)比較兩對(duì)數(shù)值的大小時(shí),應(yīng)根據(jù)對(duì)數(shù)函數(shù)的單調(diào)性,對(duì)照對(duì)數(shù)函數(shù)的圖象進(jìn)行判斷.二、重點(diǎn)難點(diǎn)突破(1)對(duì)數(shù)函數(shù)與指數(shù)函數(shù)互為反函數(shù),學(xué)習(xí)時(shí)要互相對(duì)照、
2025-06-22 23:29
【摘要】對(duì)數(shù)函數(shù)(1)教學(xué)目標(biāo):1.掌握對(duì)數(shù)函數(shù)的概念,熟悉對(duì)數(shù)函數(shù)的圖象和性質(zhì);2.通過(guò)觀察對(duì)數(shù)函數(shù)的圖象,發(fā)現(xiàn)并歸納對(duì)數(shù)函數(shù)的性質(zhì);3.培養(yǎng)學(xué)生數(shù)形結(jié)合的思想以及分析推理的能力.教學(xué)重點(diǎn):理解對(duì)數(shù)函數(shù)的定義,初步掌握對(duì)數(shù)函數(shù)的圖象和性質(zhì).教學(xué)難點(diǎn):底數(shù)a對(duì)圖象的影響及對(duì)對(duì)數(shù)函數(shù)性質(zhì)的作用.教學(xué)過(guò)程:
2024-12-18 18:29
【摘要】菜單課后作業(yè)典例探究·提知能自主落實(shí)·固基礎(chǔ)高考體驗(yàn)·明考情新課標(biāo)·文科數(shù)學(xué)(安徽專用)第六節(jié)對(duì)數(shù)與對(duì)數(shù)函數(shù)菜單
2025-01-21 16:32
【摘要】中小學(xué)課件站高中數(shù)學(xué)必修1中小學(xué)課件站情境問(wèn)題:設(shè)x年可實(shí)現(xiàn)翻一番的目標(biāo),則有假設(shè)2021年我國(guó)的國(guó)民生產(chǎn)總值為a億元,如每年平均增長(zhǎng)8%,那么經(jīng)過(guò)多少年,國(guó)民生產(chǎn)總值可翻一番?a(1+)x=2a,即=2.在指數(shù)式中,已知底數(shù)和指數(shù),通過(guò)乘方運(yùn)算可求冪;而已知指數(shù)和冪,則可通
2024-12-18 00:42
【摘要】對(duì)數(shù)函數(shù)(3)教學(xué)目標(biāo):1.進(jìn)一步理解對(duì)數(shù)函數(shù)的性質(zhì),能運(yùn)用對(duì)數(shù)函數(shù)的相關(guān)性質(zhì)解決對(duì)數(shù)型函數(shù)的常見問(wèn)題.2.培養(yǎng)學(xué)生數(shù)形結(jié)合的思想,以及分析推理的能力.教學(xué)重點(diǎn):對(duì)數(shù)函數(shù)性質(zhì)的應(yīng)用.教學(xué)難點(diǎn):對(duì)數(shù)函數(shù)的性質(zhì)向?qū)?shù)型函數(shù)的演變延伸.教學(xué)過(guò)程:一、問(wèn)題情境1.復(fù)習(xí)對(duì)數(shù)函數(shù)
【摘要】中小學(xué)課件站高中數(shù)學(xué)必修1中小學(xué)課件站情境問(wèn)題:一般地,對(duì)于a>0,a≠1,M>0,N>0,都有對(duì)數(shù)的性質(zhì):(1)已知lg2=,lg3=,lg12的值約為多少?(2)能否利用lg2與lg3的值,近似求log23的值呢,這三者之間有什么呢?loga(M·N)=logaM
【摘要】中小學(xué)課件站高中數(shù)學(xué)必修1中小學(xué)課件站情境問(wèn)題:一般地,如果a(a>0,a≠1)的b次冪等于N,即ab=N.那么就稱b為以a為底的N的對(duì)數(shù).記作:logaN=b.對(duì)數(shù)的定義:a>0,a≠1b?RN>0ab=N對(duì)數(shù)式指數(shù)式logaN=b(1)
【摘要】復(fù)習(xí):一般的,函數(shù)y=ax(a>0,且a≠1)叫做指數(shù)函數(shù),其中x是自變量.函數(shù)的定義域是R.a101)yx(0,1
2024-12-07 06:23
【摘要】第一篇: 課題:§教學(xué)目的:(1)理解對(duì)數(shù)的概念;(2)能夠說(shuō)明對(duì)數(shù)與指數(shù)的關(guān)系;(3)掌握對(duì)數(shù)式與指數(shù)式的相互轉(zhuǎn)化. 教學(xué)重點(diǎn):對(duì)數(shù)的概念,對(duì)數(shù)式與指數(shù)式的相互轉(zhuǎn)化教學(xué)難點(diǎn):對(duì)數(shù)概念的理解.教學(xué)...
2024-10-15 00:15
【摘要】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,+∞)
2024-12-07 12:00
【摘要】對(duì)數(shù)函數(shù)的概念與圖象;。知識(shí)與技能目標(biāo):過(guò)程與方法目標(biāo):情感態(tài)度價(jià)值觀目標(biāo):經(jīng)歷函數(shù)和的畫法,觀察其圖象特征并用代數(shù)語(yǔ)言進(jìn)行描述得出函數(shù)性質(zhì),進(jìn)一步探究出函數(shù)的圖象與性質(zhì).
2024-12-07 19:51
【摘要】高中蘇教版數(shù)學(xué)①對(duì)數(shù)函數(shù)測(cè)試題一、選擇題1.若5logxyz?,則()A.5zyx?B.5zyx?C.5zyx?D.5xyz?答案:B2.對(duì)于0a?,1a?,下列命題中,正確命題的個(gè)數(shù)是()①若MN?,則loglogaaMN?;②若loglo
2024-12-05 11:50
【摘要】§對(duì)數(shù)函數(shù)3.對(duì)數(shù)(一)一、基礎(chǔ)過(guò)關(guān)1.有以下四個(gè)結(jié)論:①lg(lg10)=0;②ln(lne)=0;③若10=lgx,則x=100;④若e=lnx,則x=________.(填序號(hào))2.在N=log(5-b)(b-2)中,實(shí)數(shù)b的取值范圍是________.
2024-12-28 05:55
【摘要】對(duì)數(shù)與對(duì)數(shù)函數(shù)(一)對(duì)數(shù)1.對(duì)數(shù)的概念:一般地,如果,那么數(shù)叫做以為底的對(duì)數(shù),記作:(—底數(shù),—真數(shù),—對(duì)數(shù)式)說(shuō)明:注意底數(shù)的限制,且;;注意對(duì)數(shù)的書寫格式.兩個(gè)重要對(duì)數(shù):常用對(duì)數(shù):以10為底的對(duì)數(shù);自然對(duì)數(shù):以無(wú)理數(shù)為底的對(duì)數(shù)的對(duì)數(shù).u指數(shù)式與對(duì)數(shù)式的互化冪值真數(shù)=N=b
2025-04-19 05:09
【摘要】的圖象作出函數(shù)2)1(12???xlogy.知識(shí)綜合3A.3)4(22 的實(shí)根的個(gè)數(shù)為(?。┓匠蘹xlog.??.______xxlogxf.x的值域?yàn)?,,函?shù)????????121)(321??),(),() ,(
2025-03-22 14:53