9在英语中,实数是Real Number,一般取 Real 的前两个字母“Re”表示一个复数的实部;虚数是 Imaginary Number,一般取 Imaginary 的前两个字母“Im”表示一个复数的虚部.如:Re(2+3i)=2,Im(2+3i)=3; Re(-3i)=0, Im(-3i)=-3.已知复数z是方程 x^2+2x+2=0 的解.(1)若Im(z)0,且 a/z=b-2i...
在英语中,实数是Real Number,一般取 Real 的前两个字母“Re”表示一个复数的实部;虚数是 Imaginary Number,一般取 Imaginary 的前两个字母“Im”表示一个复数的虚部.如:Re(2+3i)=2,Im(2+3i)=3; Re(-3i)=0, Im(-3i)=-3.已知复数z是方程 x^2+2x+2=0 的解.(1)若Im(z)0,且 a/z=b-2i(...
Complex number: z = a+bi 虚数i (imaginary)的出现也才推进整个科学往后迈向另一个世代, 虚数在学习过程我们都很习惯它的存在,但跟实数不一样,你可以描述一个人的身高,体重,声音的大小或光影的明暗,或天线接收讯号示波器波形大小,你会记录1V, 1.1V, 2V, 3V, 1V,都是实数的信息,你不会说你的身高是169...
Irrational number Interval notation Open interval Closed interval Half-open interval Infinite interval Absolute value Complex number Imaginary number Complex conjugate Objectives Review the basic properties of the real numbers, as well as important subsets, particularly in relation to the real line ...
若,则为___(real number); 若,则为___(imaginary number);,时,称为纯虚数. 教师内容: 如是一个虚数,但不是一个纯虚数;是一个纯虚数. 可以举例:若,问是实数、虚数、纯虚数时,分别为多少? 是实数;是虚数;是纯虚数. 相关知识点: 试题来源: 解析 实数 虚数 反馈 收藏 ...
若,则为___(real number); 若,则为___(imaginary number);,时,称为纯虚数. 教师内容: 如是一个虚数,但不是一个纯虚数;是一个纯虚数. 可以举例:若,问是实数、虚数、纯虚数时,分别为多少? 是实数;是虚数;是纯虚数. 相关知识点: 试题来源: 解析 实数 虚数 反馈 收藏 ...
complex number,complex quantity,imaginary,imaginary number- (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1 rational,rational number- an integer or a fraction irrational,irrational number- a real number that cannot be expressed as a ra...
when multiplied by itself, gives a negative real number as an answer. As a result, the square root of a negative real number can't be a real number. The square roots of negative real numbers are called imaginary numbers, and they are the elements of a set of numbers completely separate...
. We callathereal partof the complex number andbtheimaginary part.We define theabsolute valueof the complex number to be |a + bi| = . Theconjugateof the complex numbera + biisa – bi. Excel Format In Excel, complex numbers are represented as text of the form “a + bi”. Excel pro...
[2023河北南宫中学期末]在英语中,实数是Real Number,一般取 Real的前两个字母“Re”表示一个复数的实部;虚数是Imaginary Number,一般取 Imaginary 的前两个字母“Im”表示一个复数的虚部.如:Re(2+3i)=2,Im(2+3i)=3; Re(-3i)=0, Im(-3i)=-3.已知复数z是方程 x^2+2x+2=0 的解(1)若Im(z)0,...