《高中數(shù)學(xué)必修三人教B版ppt課件1.1算法與程序框圖1.1.2、1.1.3-第2課時(shí)》由會(huì)員分享，可在線閱讀，更多相關(guān)《高中數(shù)學(xué)必修三人教B版ppt課件1.1算法與程序框圖1.1.2、1.1.3-第2課時(shí)（31頁珍藏版）》請?jiān)谘b配圖網(wǎng)上搜索。

1、Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,單擊此處編輯母版文本樣式,返回導(dǎo)航,第一章算法初步,數(shù),學(xué),必,修,人,教,B,版,單擊此處編輯母版標(biāo)題樣式,單擊此處編輯母版文本樣式,第二級,第三級,第四級,第五級,*,*,數(shù) 學(xué),必修,人教,B,版,新課標(biāo)導(dǎo)學(xué),數(shù) 學(xué)必修 人教B版新課標(biāo)導(dǎo)學(xué),第一章,算法初步,1.1.2程序框圖,1.1.3,算法的三種基本邏輯結(jié)構(gòu)和框圖表示,第,2,課時(shí)條件分支結(jié)構(gòu),第

2、一章算法初步1.1.2程序框圖第2課時(shí)條件分支結(jié)構(gòu),1,自主預(yù)習(xí)學(xué)案,2,互動(dòng)探究學(xué)案,3,課時(shí)作業(yè)學(xué)案,1自主預(yù)習(xí)學(xué)案2互動(dòng)探究學(xué)案3課時(shí)作業(yè)學(xué)案,自主預(yù)習(xí)學(xué)案,自主預(yù)習(xí)學(xué)案,春節(jié)期間某服裝商品進(jìn)行團(tuán)購優(yōu)惠活動(dòng)，購買,5,件或,5,件以下，每件,99,元，超過,5,件時(shí)超過的部分每件按,8,折優(yōu)惠若某人購買,x,件，試寫出購物總費(fèi)用,y,與購買件數(shù),x,的關(guān)系式，畫出算法的程序框圖,春節(jié)期間某服裝商品進(jìn)行團(tuán)購優(yōu)惠活動(dòng)，購買5件或5件以下，每件,1,條件分支結(jié)構(gòu),在一個(gè)算法中，經(jīng)常會(huì)遇到一些條件的判斷，算法的流程根據(jù),_,有不同的流向，這種先根據(jù),_,，再?zèng)Q定,_,的結(jié)構(gòu)稱為條件結(jié)構(gòu),條件是否

3、成立,條件作出判斷,執(zhí)行哪一種操作,1條件分支結(jié)構(gòu)條件是否成立 條件作出判斷 執(zhí)行哪一種操作,2,條件分支結(jié)構(gòu)程序框圖的兩種形式及特征,一個(gè),步驟,A,2條件分支結(jié)構(gòu)程序框圖的兩種形式及特征一個(gè) 步驟A,B,B,B,B,高中數(shù)學(xué)必修三人教B版ppt課件1,高中數(shù)學(xué)必修三人教B版ppt課件1,互動(dòng)探究學(xué)案,互動(dòng)探究學(xué)案,命題方向,1,設(shè)計(jì)較簡單的條件結(jié)構(gòu)的程序框圖,命題方向1設(shè)計(jì)較簡單的條件結(jié)構(gòu)的程序框圖,解析,算法如下：,S1,輸入自變量,x,的值,S2,判斷,x,0,是否成立，若成立，計(jì)算,y,1,x,；否則，執(zhí)行下一步,S3,計(jì)算,y,x,3.,S4,輸出,y,.,程序框圖如圖所示,解析算

4、法如下：,規(guī)律總結(jié),凡是必須先根據(jù)條件作出判斷，然后再?zèng)Q定進(jìn)行哪一個(gè)步驟的問題，在畫程序框圖時(shí)，必須引入判斷框，根據(jù)題目條件，選擇簡單條件結(jié)構(gòu)或嵌套式條件結(jié)構(gòu)如求分段函數(shù)的函數(shù)值的程序框圖的畫法，如果是分兩段的函數(shù)，只需引入一個(gè)判斷框；如果是分三段的函數(shù)，需引入兩個(gè)判斷框；分四段的函數(shù)需引入三個(gè)判斷框，依此類推判斷框內(nèi)的內(nèi)容是沒有固定順序的,規(guī)律總結(jié)凡是必須先根據(jù)條件作出判斷，然后再?zèng)Q定進(jìn)行哪一,解析,算法如下：,S1,輸入,x,；,S2,判斷,x,，若,x,1,，則,y,x,1,，否則執(zhí)行,S3,；,S3,y,1,x,；,S4,輸出,y,.,程序框圖如右圖所示：,解析算法如下：,命題方向,2

5、,設(shè)計(jì)較復(fù)雜的條件分支結(jié)構(gòu)的程序框圖,命題方向2設(shè)計(jì)較復(fù)雜的條件分支結(jié)構(gòu)的程序框圖,解析,算法：第一步，輸入,x,.,第二步，如果,x,0,，則使,y,2,x,1,，輸出,y,，否則執(zhí)行第三步,第三步，如果,0,x,1,，則使,y,x,2,1,，輸出,y,，否則執(zhí)行第四步,第四步，,y,x,3,2,x,.,第五步，輸出,y,.,相應(yīng)的程序框圖如下圖所示,解析算法：第一步，輸入x.,規(guī)律總結(jié),在畫與分段函數(shù)有關(guān)的程序框圖時(shí)，如果函數(shù)中含有,n,個(gè)解析式，那么我們需要,n,1,個(gè)判斷框來進(jìn)行求解,規(guī)律總結(jié)在畫與分段函數(shù)有關(guān)的程序框圖時(shí)，如果函數(shù)中含有,C,C,高中數(shù)學(xué)必修三人教B版ppt課件1,高

6、中數(shù)學(xué)必修三人教B版ppt課件1,(1),審題；,(2),列式、建立數(shù)學(xué)模型、將實(shí)際問題轉(zhuǎn)化為數(shù)學(xué)問題,(3),根據(jù)所建數(shù)學(xué)模型選擇適合的邏輯結(jié)構(gòu)，畫出程序框圖,利用程序框圖解決實(shí)際問題的步驟,(1)審題；利用程序框圖解決實(shí)際問題的步驟,高中數(shù)學(xué)必修三人教B版ppt課件1,C,C,D,D,A,A,15,15,課時(shí)作業(yè)學(xué)案,課時(shí)作業(yè)學(xué)案,高中數(shù)學(xué)必修三人教B版ppt課件1,團(tuán)Tiffany，a 16yearold girl，was very shy.Last September，her best frien“I was really sad the moment I heard the bad

7、news and I didnt know what to do，”Tiffany recalled.“I shut myself in my room for a whole week.It was then that my aunt took me to a sports club one Saturday and I saw so many young people playing different kinds of sports there.I signed up for a beginners course in volleyball and since then I have b

8、een playing this sport.Now I practice twice a week there.It is wonderful playing sports in this club and I have made lots of friends as well.2 ”,The most basic aim of playing sports is that you can improve your health even if you are not very good at sports.Besides，you can get to know a circle of pe

9、ople at your age while playing sports.3 Since she joined the sports club，s,I got used to the life here.And now I know lots of(5)_ here.For example,when I meet my friend on the street,I usually(6)_ him like this,“Hey,where are you going?”In our country if someone asks this,people may get(7)_ but in t

10、his country people wont.Of course,there are some other interesting things here.Ill tell you about them next time.,he has opened up herself and now she has become very active and enjoys meeting and talking with others.,1Its polite for girls to kiss each other on the side of the face.s also become mor

11、e confident.團(tuán)圓圓一家在臺(tái)灣可受歡迎了。每天，小朋友們排著長隊(duì)，等著跟它們合影留念。從“排著長隊(duì)”體現(xiàn)出每天喜歡它們的人不計(jì)其數(shù)，特別受選D.A.根據(jù)同類項(xiàng)合并法則,與不是同類項(xiàng),不能合并,故本選項(xiàng)錯(cuò)誤;B.根據(jù)算術(shù)平方根的定義,=3,故本選項(xiàng)錯(cuò)誤;C.根據(jù)同底數(shù)冪的乘法aa2=a3,故本選項(xiàng)錯(cuò)誤;D.根據(jù)積的乘方,(2a3)2=4a6,故本選項(xiàng)正確.歡迎。從“合影留念”體現(xiàn)出大家都想和大熊貓留住最美麗的瞬間以作紀(jì)念。,Nothing can be accomplished without norms or standards.,精品資料！感謝閱讀下載！,團(tuán)Tiffany，a 16yearold girl，wa,31,