(1-3i)·(3i+2)=___用什么知识算的

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(1-3i)·(3i+2)=___用什么知识算的

(1-3i)·(3i+2)=___用什么知识算的
(1-3i)·(3i+2)=___
用什么知识算的

(1-3i)·(3i+2)=___用什么知识算的
复数阿
根据i*i=-1
(1-3i)*(3i+2)
=3i+2-(3i*3i)-6i
=3i+2-9*i*i-6i
=3i-6i+2-9*(-1)
=11-3i

(1-3i)·(3i+2)=___用什么知识算的 I'm out的同义句(3种)I'm out.1.___ ___ ___2.___ ___ ___ ___.3.___ ___ 一、用所给词的适当形式填空.1、It ___(be)my birthday yesterday ,I ___(have)a good time.2、I like ___ (play)basketball,I can ___(play)very ___(good).3、Mrs Black ___(go) to work by bike every day,but Mrs Black __ 1 i want to join the music club.i ___ ___ ___ join the music club.2 lingling does well in drawing.lingling ___ ___ ___ drawing.3 we like sports very mush.we ___ sports.4.i often help my parents with the housework.i often ___ my parents ___ the housew I 1 3 0 I I 7 I I 0 1 -1 I X= I 2 I求X.大哥大姐,用矩阵的初等变换写~I 2 1 5 I I 4 I 复数计算:(1)i+i^2+i^3+.+i^100(2)i^10+i^20+i^30+.+i^80(3)i*i^2*i^3*.*i^100(4)i*i^3*i^5*.*i^99(5)[(1+i)/(1-i)])[(1+i)/(1-i)]^2)[(1+i)/(1-i)]^3.)[(1+i)/(1-i)]^100 计算题(i^2=-1) (1+2i)-(2-3i)= (1+2i)(2-3i)= (1-2i)/i= (2-i)/1+2i=计算题(i^2=-1)(1+2i)-(2-3i)=(1+2i)(2-3i)=(1-2i)/i=(2-i)/1+2i= 【英语提问】对划线部分提问.每空一词.1)the neighbourhood has _15_ buildings.___ ___ ___ ___ the neighbourhood.2)i am going to _city garden_ tomorrow afternoon.___ ___ ___ ___ tomorrow afternoon?3)i will go to _the beach_ next week._ 1、I studied English when I was seven years old.(改为简单句) I studied English___ ___ ___ ___.2It took me an hour to watch TV last night.(改为同义句)I ____ an hour ____ ____ ____ last night.3、同一时期用英语怎么说?不好 写四字成语(1)如:依依不舍 ___ ___ 不 ___ 、 ___ ___ 不 ___(2)如:月光如水 ___ ___ 如 ___ 、 ___ ___ 如 ___(3)如:小心翼翼 ___ ___ ___ ___ 、 ___ ___ ___ ___ 已知i为虚数单位,则(4+2i)/(1-i)=( ) A.1+3i B.1-3i C.3-i D.3+i 七年级下册英语综合练习册题目1.What (1)___you___(do),Betty?I (2)___(read)a storybook.I (3)___ (love) reading storybooks.I often (4)___(borrow) some from the library.What about you?I (5)___(find) cartoon books more interes 二、根据汉语提示完成句子,每空一词.1)He is going to ___ ___ ___(寄一封信).2)There is school ____ ____ ____ ____(在街道拐角处).3)I'm looking for a ___ ___(服装店)4)Post office is ___ ___ ___ ___ (在.尽头)the ro (2+i)(1-i)/1-2i=i代表什么 ,急用, 根据所给中文,把句子补充完整1,I have to do the work ___ ___ ___[单独]2,She told me that the rain would stop___ ___[过会儿]3,___ ___ [起初] ,I didn't like English ,but now I am very inerested in it.4,He ___ ___ [开]the light and be I practice the guitar every day.(用have to改写句子) I ___ ___ ___ ___ ___ every day. 设i为虚数单位,则1+i+i^2+i^3+.+i^10= 设i为虚数单位,则1+i+i^2+i^3+…+i^2014=