【摘要】高一數(shù)學(xué)同步測(cè)試(9)—對(duì)數(shù)與對(duì)數(shù)函數(shù)一、選擇題:1.的值是 ()A. B.1 C. D.22.若log2=0,則x、y、z的大小關(guān)系是 ()A.z<x<y B.x<y<z C.y<z<x D.z<y<x3.已知x=+1,則log4(x3-x-6)等于 ()A. B. D. 4.已知lg2=a,lg3=b,則
2025-03-25 00:39
【摘要】新課標(biāo)人教版課件系列《高中數(shù)學(xué)》必修1《對(duì)數(shù)函數(shù)的性質(zhì)與應(yīng)用》教學(xué)目標(biāo)?掌握對(duì)數(shù)函數(shù)的圖象和性質(zhì)及其運(yùn)用,利用性質(zhì)解決一些實(shí)際問(wèn)題;理解反函數(shù)的概念,了解互為反函數(shù)的圖象關(guān)于直線y=x對(duì)稱。?教學(xué)重點(diǎn):對(duì)數(shù)函數(shù)的定義、圖象和性質(zhì)。對(duì)數(shù)函數(shù)圖象和性質(zhì)的應(yīng)用。?教學(xué)難點(diǎn):對(duì)數(shù)函數(shù)圖象
2024-11-12 01:35
【摘要】對(duì)數(shù)運(yùn)算及其對(duì)數(shù)函數(shù)一.選擇題(共22小題)1.log42﹣log48等于( ?。〢.﹣2 B.﹣1 C.1 D.22.計(jì)算:(log43+log83)(log32+log92)=( ?。〢. B. C.5 D.153.計(jì)算(log54)?(log1625)=( )A.2 B.1 C. D.4.計(jì)算:log43?log92=( ?。〢. B. C.4 D
2025-05-16 06:58
【摘要】《對(duì)數(shù)及對(duì)數(shù)函數(shù)》練習(xí)題講解知識(shí)梳理:1、對(duì)數(shù)的定義:如果a(a0,a≠1)的b次冪等于N,就是ab=N,那么數(shù)b叫做a為底N的對(duì)數(shù),記作logaN=b,a叫做對(duì)數(shù)的底數(shù),N叫做真數(shù)。(N0)2、指數(shù)和對(duì)數(shù)的關(guān)系:3、對(duì)數(shù)恒等式:∴,,4、運(yùn)算法則:5、換底公式:6、兩個(gè)較為常用的推論:1°
【摘要】ab=N→logaN=b對(duì)數(shù)的概念ab=N→logaN=bab=N→logaN=b引子:例2020年我國(guó)國(guó)民生產(chǎn)總值為a億元,如果每年平均增長(zhǎng)8%,那么經(jīng)過(guò)多少年國(guó)民生產(chǎn)總值是2020年的2倍?抽象出:這是已知底數(shù)和冪的值,求指數(shù)!你能看得出來(lái)嗎?怎樣求呢?數(shù)2(底),4(指數(shù))
2024-11-06 18:57
【摘要】高一數(shù)學(xué)《對(duì)數(shù)函數(shù)及其性質(zhì)》說(shuō)課稿 高一數(shù)學(xué)《對(duì)數(shù)函數(shù)及其性質(zhì)》說(shuō)課稿1各位評(píng)委、老師: 大家好,我說(shuō)課的內(nèi)容是人教A版《普通高中課程標(biāo)準(zhǔn)實(shí)驗(yàn)教科書(shū)A版數(shù)學(xué)必修一》《對(duì)數(shù)函數(shù)及其性質(zhì)》...
2024-12-07 02:26
【摘要】必修1基本初等函數(shù)知識(shí)點(diǎn)整理對(duì)數(shù)及對(duì)數(shù)的運(yùn)算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:其中:是底數(shù),是真數(shù),是對(duì)數(shù)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).2對(duì)數(shù)式與指數(shù)式的互化 3對(duì)數(shù)的性質(zhì)(1)負(fù)數(shù)和零沒(méi)有對(duì)數(shù);(2)1的對(duì)數(shù)是零:
2025-06-23 18:23
【摘要】對(duì)數(shù)函數(shù)及其性質(zhì)(一)杭州七中步一雋引例復(fù)利是計(jì)算利息的一種方式,現(xiàn)假設(shè)有本金1元,每期利率為%,本利和為y,試寫(xiě)出本利和y隨存期x變化的函數(shù)解析式.,這個(gè)函數(shù)寫(xiě)成對(duì)數(shù)式的形式是什么?x是否也是本利和y的函數(shù)呢?y表示函數(shù),x表示自變量,這個(gè)函數(shù)的解析式是什么?xy?
2024-11-18 13:05
【摘要】主講人:劉文復(fù)習(xí)0<a<1性質(zhì)a>1圖象指數(shù)函數(shù)y=ax(a>0且a≠0)的圖象和性質(zhì):定義域值域過(guò)定點(diǎn)單調(diào)性y=1xyy=ax(0<a<1)O(0,1)y=ax(a>1)y=1
2024-11-21 06:15
【摘要】§北京青年報(bào)曾報(bào)道:潮白河底挖出冰凍古樹(shù)可能是山楊,專家經(jīng)過(guò)檢測(cè)可推斷樹(shù)的埋藏時(shí)間.?你知道專家是根據(jù)什么推斷樹(shù)的埋藏時(shí)間的嗎?考古學(xué)家一般通過(guò)提取附著在出土文物、古遺址上死亡的殘留物,利用估計(jì)出土文物或古遺址的年代。Pt573021log?t能不能看成是P的函數(shù)?
2024-11-21 01:13
【摘要】對(duì)數(shù)函數(shù)圖象與性質(zhì)a10a1圖象性質(zhì)定義域:值域:在(0,+∞)上是函數(shù)在(0,+∞)上是函數(shù)32.521.510.5-0.5-1-1.5-2
2024-11-11 21:10
【摘要】高一數(shù)學(xué)函數(shù)的單調(diào)性、奇偶性經(jīng)典例題透析類型一、指數(shù)式與對(duì)數(shù)式互化及其應(yīng)用 1.將下列指數(shù)式與對(duì)數(shù)式互化: (1);(2);(3);(4);(5);(6). 思路點(diǎn)撥:運(yùn)用對(duì)數(shù)的定義進(jìn)行互化. 解:(1);(2);