2020大二輪高考總復(fù)習(xí)理數(shù)課件：自檢2復(fù)數(shù)與算法.ppt[文字可編輯]

1、第二版塊,高考小題自檢區(qū),自檢,02,復(fù)數(shù)與算法,A,組,高考真題集中訓(xùn)練,欄,目,導(dǎo),航,考點(diǎn),1,復(fù)數(shù)的概念與運(yùn)算,考點(diǎn),2,程序框圖與算法,復(fù)數(shù)的概念與運(yùn)算,3,i,1,2017,全國(guó)卷,D,1,i,A,1,2i,C,2,i,B,1,2i,D,2,i,3,i,3,i,1,i,3,3i,i,1,解析,2,i,故選,D,2,1,i,1,i,1,i,2,2017,全國(guó)卷,設(shè)復(fù)數(shù),z,滿足,1,i,z,2i,則,z,C,1,A,2,C,2,2,B,2,D,2,2i,解析,方法一,由,1,i,z,2i,得,z,1,i,1,i,z,2,故選,C,方法二,2i,1,i,由,1,i,z,2i,1,i,得

2、,z,1,i,z,2,故選,C,2,2,3,2016,全國(guó)乙卷,設(shè),1,i,x,1,y,i,其中,x,y,是實(shí)數(shù)，則,x,y,i,B,A,1,C,3,B,2,D,2,解析,1,i,x,1,y,i,x,x,i,1,y,i,又,x,y,R,x,1,y,1,x,y,i,1,i,2,故選,B,4,2016,全國(guó)甲卷,已知,z,m,3,m,1)i,在復(fù)平面內(nèi)對(duì)應(yīng)的點(diǎn)在第四象限，則,實(shí)數(shù),m,的取值范圍是,A,A,3,1,C,1,B,1,3,D,3,m,3,0,解析,由題意知,m,1,0,即,3,m,1,故實(shí)數(shù),m,的取值范圍為,3,1,4i,5,2016,全國(guó)丙卷,若,z,1,2i,則,C,z,z,1,

3、A,1,C,i,B,1,D,i,4i,4i,解析,因?yàn)?z,1,2i,則,z,1,2i,所以,z,z,1,2i)(1,2i,5,則,4,z,z,1,i,故選,C,1,z,6,2015,全國(guó)卷,設(shè)復(fù)數(shù),z,滿足,i,則,z,A,1,z,A,1,C,3,B,2,D,2,1,z,1,i,1,i,1,i,2i,解析,由,i,得,z,i,所以,z,i,1,故選,A,2,2,1,z,1,i,7,2015,全國(guó)卷,若,a,為實(shí)數(shù)，且,2,a,i,a,2i,4i,則,a,B,A,1,C,1,B,0,D,2,2,解析,2,a,i,a,2i,4i,4,a,a,4)i,4i,4,a,0,2,a,4,4,解得,a,0

4、,故選,B,程序框圖與算法,1,2017,全國(guó)卷,如圖所示的程序框圖是為了求出滿,足,3,2,1 000,的最小偶數(shù),n,那么在,白框中，可以分別填入,D,A,A,1 000,和,n,n,1,B,A,1 000,和,n,n,2,C,A,1 000,和,n,n,1,D,A,1 000,和,n,n,2,n,n,和兩個(gè)空,解析,因?yàn)轭}目要求的是,滿足,3,2,1,000,的最小偶數(shù),n,所以,n,的疊加,值為,2,所以內(nèi)填入,n,n,2,由程序框圖知，當(dāng),輸出,n,所以,內(nèi)填入,A,1 000,故選,D,內(nèi)的條件不滿足時(shí),n,n,2,2017,全國(guó)卷,執(zhí)行如圖所示的程序框圖，為,使輸出,S,的值小于

5、,91,則輸入的正整數(shù),N,的最小值為,D,A,5,B,4,C,3,D,2,解析,假設(shè),N,2,程序執(zhí)行過程如下,t,1,M,100,S,0,100,1,2,S,0,100,100,M,10,10,t,2,10,2,2,S,100,10,90,M,10,1,t,3,3,2,輸出,S,90,91,符合題意,N,2,成立顯然,2,是最小值故選,D,3,2017,全國(guó)卷,執(zhí)行如圖所示的程序框圖，如果輸入,A,2,B,3,的,a,1,則輸出的,S,B,C,4,D,5,解析,當(dāng),K,1,時(shí),S,0,1,1,1,a,1,執(zhí)行,K,K,1,后,K,2,當(dāng),K,2,時(shí),S,1,1,2,1,a,1,執(zhí)行,K,K

6、,1,后,K,3,當(dāng),K,3,時(shí),S,1,1,3,2,a,1,執(zhí)行,K,K,1,后,K,4,當(dāng),K,4,時(shí),S,2,1,4,2,a,1,執(zhí)行,K,K,1,后,K,5,當(dāng),K,5,時(shí),S,2,1,5,3,a,1,執(zhí)行,K,K,1,后,K,6,當(dāng),K,6,時(shí),S,3,1,6,3,執(zhí)行,K,K,1,后,K,7,6,輸出,S,3,結(jié)束循,環(huán)故選,B,4,2016,全國(guó)甲卷,中國(guó)古代有計(jì)算多項(xiàng)式值的秦九韶算法，如,圖是實(shí)現(xiàn)該算法的程序框圖執(zhí)行該程序框圖，若輸入的,x,2,n,2,依次輸入的,a,為,2,2,5,則輸出的,s,C,A,7,B,12,C,17,D,34,解析,第一次運(yùn)算,s,0,2,2,2,

7、k,1,第二次運(yùn)算,s,2,2,2,6,k,2,第三次運(yùn)算,s,6,2,5,17,k,32,結(jié)束循環(huán),s,17,5,2016,全國(guó)丙卷,執(zhí)行如圖所示的程序框圖，如果輸入的,a,4,b,6,那么,輸出的,n,B,A,3,C,5,解析,程序運(yùn)行如下,開始,a,4,b,6,n,0,s,0,第,1,次循環(huán),a,2,b,4,a,6,s,6,n,1,第,2,次循環(huán),a,2,b,6,a,4,s,10,n,2,B,4,D,6,第,3,次循環(huán),a,2,b,4,a,6,s,16,n,3,第,4,次循環(huán),a,2,b,6,a,4,s,20,n,4,此時(shí)，滿足條件,s,16,退出循環(huán)，輸出,n,4,故選,B,6,201

8、5,全國(guó)卷,執(zhí)行如圖所示的程序框圖，如果輸入的,t,0.01,則輸出的,n,C,A,5,C,7,B,6,D,8,1,1,解析,運(yùn)行第一次,S,1,2,2,0.5,m,0.25,n,1,S,0.01,運(yùn)行第二次,S,0.5,0.25,0.25,m,0.125,n,2,S,0.01,運(yùn)行第三次,S,0.25,0.125,0.125,m,0.062 5,n,3,S,0.01,運(yùn)行第四次,S,0.125,0.062 5,0.062 5,m,0.031 25,n,4,S,0.01,運(yùn)行第五次,S,0.031 25,m,0.015 625,n,5,S,0.01,運(yùn)行第六次,S,0.015 625,m,0.

9、007 812 5,n,6,S,0.01,運(yùn)行第七次,S,0.007 812 5,m,0.003 906 25,n,7,S,0.01,輸出,n,7,故選,C,7,2015,全國(guó)卷,下邊程序框圖的算法思路源于我國(guó)古代數(shù)學(xué)名著九章算,術(shù)中的“更相減損術(shù)”執(zhí)行該程序框圖，若輸入的,a,b,分別為,14,18,則輸出的,a,B,A,0,B,2,C,4,D,14,解析,a,14,b,18,第一次循環(huán),14,18,且,1418,b,18,14,4,第二次循環(huán),14,4,且,144,a,14,4,10,第三次循環(huán),10,4,且,104,a,10,4,6,第四次循環(huán),6,4,且,64,a,6,4,2,第五次循環(huán),2,4,且,24,b,4,2,2,第六次循環(huán),a,b,2,跳出循環(huán)，輸出,a,2,故選,B,8,2014,全國(guó)卷,執(zhí)行如圖所示的程序框圖，若輸入的,a,b,k,分別為,1,2,3,則輸出的,M,D,20,A,3,7,C,2,16,B,5,15,D,8,3,3,解析,第一次循環(huán),M,2,a,2,b,2,n,2,8,3,8,第二次循環(huán),M,3,a,2,b,3,n,3,15,8,15,第三次循環(huán),M,8,a,3,b,8,n,4,15,