His answer is to write Z or the conjugate complex number of Z, or both? If you know, say it, and answer it,

His answer is to write Z or the conjugate complex number of Z, or both? If you know, say it, and answer it,

There seems to be something wrong with this question
The conjugate complex number of Z * z = | Z | ^ 2, should be a real number, not 1 + 3I
Since it is to solve the equation, it is to find out the unknown number. Obviously, this problem Z is an unknown number, so it is OK to find out Z
The conjugate complex number of Z * z = | Z | ^ 2, should be a real number, can not be 1 + 3I
Given Z ∈ C, X is the conjugate complex of Z, if xz-3ix = 1 + 3I, find Z
Let z = a + bi, and then x = a-bixz-3x-3x (i-bix-3x = 1 + 3ia and#35;178; (B \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ifyou agree with my
If Z is a conjugate complex, the imaginary part is root 2 / 3 and the module is 1 / root 3, then Z is positive and negative 1 / 3-root 2 / 3I
Yes, because a ^ 2 = 1 / 9, so a = plus or minus 1 / 3. Since it is conjugate, the imaginary part is opposite, so your answer is correct~
What's this in English? To plural: () () in English?
what're these in english?
Pronunciation rules of three simple verbs and plural nouns suffixes
Online search, also includes the past tense, past participle content, hope to help you
The rule of plural change
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Case construction method pronunciation example words
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In general, add - S 1. Read after consonant / S /; map maps
2. Voiced consonants and bag bags after vowels
Read / Z /; car cars
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S, SH, CH,
The words ending in X and so on are read with - ES / iz / bus buses
watch-watches
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With CE, Se, Ze,
(d) And so on
S / iz / license licenses
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Change the consonant letter + y into I
At the end of the word, add es to read / Z / Baby --- babies
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Irregular changes of plural nouns
1）child---children foot---feet tooth---teeth
mouse---mice man---men woman---women
Note: the plural of compound words with man and woman is also - men and - women
For example: an English man, two English men. But German is not a compound word, so the plural form is Germany; Bowman is the surname, and the plural is the Bowman
2) Simple complex homomorphism such as:
deer,sheep,fish,Chinese,Japanese
li,jin,yuan,two li,three mu,four jin
However, except RMB yuan, Jiao and Fen, US dollar, pound sterling and Franc all have plural forms
a dollar, two dollars; a meter, two meters
3) Collective nouns, in the singular but in the plural
For example: people, a police, a castle and so on are plural in themselves. We can't say "a people, a police, a castle", but we can say "a people, a police, a castle"
A person, a policeman, a head of Castle, the English, the British, the French, the Chinese, the Japanese, the Swiss and other nouns are used as complex numbers when they refer to the general name of the people
The Chinese people are industrious and brave
4) Nouns ending with s and still singular, such as:
a. Maths, politics, physics and other subject nouns are uncountable and singular
b. News is an uncountable noun
c. The United States and the United Nations shall be regarded as singular
The United Nations was organized in 1945
d. The plural titles of books, plays, newspapers and magazines can also be regarded as singular
"The Arabian Nights" is a very interesting story-book.
It's a very interesting story book
5) It means something made up of two parts, such as glasses, trousers, clothes
If you want to express a specific number, you should use the quantifiers pair; suit; a pair of glasses; two pairs of trousers
6) In addition, there are also some nouns whose plural sometimes means something special, such as: goods, waters, fish
Case of NOUN
In English, some nouns can add "'s" to express all relations. The noun form with this suffix is called the possessive case of the noun, such as a teacher's book
1) For example, the boy's bag and men's room
2) If the noun has plural suffix - s, just add "'", such as: the workers' struggle
3) All nouns that can't be added with "s" can be expressed by the structure of "noun + of + noun", such as the name of the title of the song
4) When referring to the name of a shop or church or someone's home, the noun possessive often does not appear after the noun possessive, such as the barber's barber's
5) If two nouns are juxtaposed and have's respectively, it means' respectively '; if there is only one's, it means' in common'
For example: John's and Mary's room (two rooms) John and Mary's room (one room)
6) Compound noun or phrase,'s' is added at the end of the last word
A month or two's absence
Verb third person singular
1、 The change rules and pronunciation rules of the third person singular of verbs
The rules of changing the original form of verbs into the third person singular are similar to the rules of pronunciation
1. Most verbs with "s" at the end of the word are pronounced as [S] after clear consonants and [Z] after voiced consonants and vowels
①stop－stops [s] ; make－makes [s]
②read－reads [z] ; play－plays [z]
2. If it ends with a consonant letter and "Y", first change "Y" into "I", and then read [iz] with "es"
fly－flies [z]； carry－carries [z]
study－studies [z]; worry－worries
3. Those ending with "s, x, CH, SH" are pronounced [iz] by adding "es" at the end of the word
teach－teaches [iz]; watch－watches [iz]
4. For verbs ending in "O", add "es" and read [Z]
go－goes [z] do－does [z]
When the following verbs become singular, the pronunciation of the vowel part of the original word has changed greatly. Please remember
1、do [du:]－does [dz]
2、say [sei]－says [sez]
For an open syllable word ending with the silent letter "e", if the ending sound is [S], [Z], add "s" and pronounce the letter "e", which is the same as the added "s"
Read and do together
close－closes [iz]
2、 Comparing the similarities and differences of the ending changes of the original words: changing "Y" to "" and double writing the last consonant
Example words:
①baby－babies
②carry－carries
③study－studying
There are two kinds of verb past tense and past participle: regular change and irregular change
1) Rule change
Generally, add - ed look after the original verb
call
open
need looked
called
opened
needed
called
opened
needed
③ But fix's past tense and past
The participle x is fixed
Verb ending in - E plus - d move
phone
hope
agree moved
phoned
hoped
agreed
hoped
Verbs ending with a consonant and a Y, change y to I,
Plus study -
carry
try studied
studied
carried studied [5stQdid]
carried [5kArid]
tried [traid]
For words ending with the original letter plus y, add - ed play directly
enjoy
stay played
enjoyed
stayed played [pleid]
enjoyed [in5dVCid]
stayed [steid]
If there is only one consonant at the end of a stressed closed syllable word, double write the consonant and add - ed stop
plan
fit stopped
planned
fitted
For words ending with - R, double R,
Add - ed preference
refer preferred
referred preferred
2) Irregular change
The past tense and past participle of some verbs in English vary irregularly, which can be divided into five situations
1. The original form, the past tense and the past participle are all in the same form
Example:
Past participle
Cut
Hit
Cast
Hurt
Put
Let
Shut (off)
Cost
Set
Rid cut
Hit
cast
hurt
Put
Let
shut
cost
Set
rid cut
Hit
cast
hurt
Put
Let
shut
cost
Set
Rid
The past tense and the past participle are in the same form
Example:
Past participle
Find
Pay
Leave
Lend
Meet
Keep
Lose (lost)
Teach
Sit
Lead
Win find
paid
left
lent
Met
kept
lost
taught
Sat
LED
won found
paid
left
lent
Met
kept
lost
taught
Sat
LED
Won
3. The original form of the verb is the same as the past participle
Example:
Past participle
Come
Run
Become a cam
Ran
became come
Run
become
4. The original form of verb, past tense and past participle are completely different
Example:
Past participle
Give
Fly
Drink
See (see)
Go
Know
Wear
Speak gave
flew
drank
Saw
went
knew
wore
spoke given
flown
drunk
seen
gone
known
worn
spoken
There are two forms of past tense and past participle
Example:
Past participle
Burn burned
burnt burned
burnt
Learn learned
learnt learned
learnt
Smilled
smelt smelled
smelt
Spell spelled
spelt spelled
spelt
Shined (irradiation)
shone shined
shone
Leap LED
leapt leaped
leapt
Tips
a. The past tense of be is in the same form as the original
Beat, beat, beat, beat, beat
b. Lie has two kinds: regular change and irregular change
By: lie lied, lied
Lay, lain
c. Hang has two kinds: regular change and irregular change
By: Hang hanged, hanged
Hang, hang
d. Welcome is a regular verb and should not be misused as an irregular verb
Ratio: welcome, welcome, welcome (positive)
Welcome, welcome
e. Don't mistake irregular verbs for regular ones
Ratio: hit, hit, hit
Hitted, hitted
Let Z satisfy | Z | = 2Z + 9i, then Z is equal to
z=rcosx+i*rsinx,(r≥0,r,x∈R)
|z|=r,
2z=2rcosx+i*2rsinx,
2z+9i=2rcosx+i*(2rsinx+9)
From | Z | = 2Z + 9i, r = 2rcosx + I * (2rsinx + 9)
So r = 2rcosx and 2rsinx + 9 = 0,
The results show that cosx = 1 / 2, SiNx = - √ 3 / 2, r = 3 √ 3,
So z = 1.5 * √ 3-4.5i
What's this
What are these?
Ask for the past V + ed of verbs and the plural of nouns
Past tense: * * t + ed, * * D + ed, etc
Plural form: * * s + es and other forms
I'm waiting,
On the plural pronunciation of nouns: when the ending is "- s", it is read as / S /, after the voiced consonant / Z /, after the vowel / Z /. When the ending is "- ies", it is read as / iz /. When the ending is "- VES", it is read as / VZ /. When the ending of the word with "consonant + O" is "- es", it is read as / Z /, and other times it is read as /
If the complex Z satisfies 3Z + 1 = Z-I, then the locus of the point corresponding to the complex Z is
That is, | Z-I | = 3| Z-1 / 3 |, is a circle
It is reduced to x ^ 2 + (Y-1) ^ 2 = 9 ((x-1 / 3) ^ 2 + y ^ 2) and sorted to x ^ 2 + y ^ 2 - 3x / 4 + Y / 4 = 0,
That is, (x-3 / 8) ^ 2 + (y + 1 / 8) ^ 2 = (radical 10 / 8) ^ 2
What's the plural of what's this?
what ar