8和10的最小公倍數和最大公因數

8和10的最小公倍數和最大公因數

40
15和4的最大公因數和最小公倍數
最大公因數=1
最小公倍數=15*4=60
none neither either both all every each意思,用法,後面接什麼名詞(單複數、可數不可數),接的謂語
意思,用法,後面接什麼名詞(單複數、可數不可數),接的謂語(是否要變單三),(有區別的加上區別),要類似於清單那樣比較清楚的講解.要保證對呀.
none表示三者或三者以上的都不後接謂複neither既不也不兩者的都不neither nor既不也不(有就近原則)neither of +謂單either或者either or或者…或者(有就近原則)either of謂單both兩者都both and兩…
都每一個任何都不不都
兩者both each(of)…either neither both not/ not both
三者all every…展開
都每一個任何都不不都
兩者both each(of)…either neither both not/ not both
三者all every(one of…)any none all not / not all
謂語動詞are/do is/ does is/does is/does are/ do收起
複數Z的模是以(-3,0)為圓心,2為半徑的圓.那麼w=3iz表示什麼圖形?大題中的第二問.
打錯了,是Z模是以(0,-3)為圓心
設Z=a+bi,因為複數Z的模是以(0,-3)為圓心,2為半徑的圓,所以|a+(b+3)i|=2a^2+(b+3)^2=4設w=x+yi因為w=3iz=3i(a+bi)x+yi=-3b+3aix=-3by=3a所以a=y/3,b=-x/3代入a^2+(b+3)^2=4化簡得(x-9)^2+y^2=36所以w=3iz表示以(9,…
How many kinds of後加單數還是複數?This kind of後加單數還是複數?
how many kinds of +複數
this kind of+單數.
若方程x+(5+i)x+4+pi=0(p屬於C)有實根,求p和方程的根
x+(5+i)x+4+pi=0有實根
∴x為實數
∴(6x+4)+(x+p)i=0
∴6x+4=0且x+p=0
∴x=-2/3,p=2/3
what kinds of和what kind of的區別,後跟名詞單數還是複數?
What kind of a person is he?(the answer is expected to be in the singular.)
What kind of people are they?(the answer is expected to be in the singular.)
What kind of dessert would you like?(the answer is expected to be in the singular.)
What kind of a teacher are you?(the answer is expected to be in the singular.)
How many different kinds of dessert are there?(several,the answer is in the plural)
How many different kinds of teacher are there?
All the above are correct usage of the word kind/kinds.
I hope this helps.
一道複數題目.
如果複數Z1的的幅角π/4,且z²;共軛-2/z1是實數,
(1)求複數Z;
(2)|z|=2|z2|,且ARG2=ARG1+π/2求複數Z2;
如果複數Z1的幅角是π/4,且z1²;共軛-2/z1是實數,
(1)求複數Z1;
(2)|z1|=2|z2|,且ARG2=ARG1+π/2求複數Z2;
設z1=r(cosπ/4+isinπ/4),r>0
z²;1=r²;(cosπ/2+isinπ/2)=r²;i
z²;1共軛=-r²;i
2/z1=2/r(cosπ/4-isinπ/4)
=√2r-√2i/r
∴z1²;共軛-2/z1
=-r²;i-√2r+√2i/r
=-√2r+(√2/r-r²;)i∈R
∴√2/r-r²;=0
∴r³;=√2,r=2^(1/6)
∴z1=2^(1/6)(cosπ/4+isinπ/4)
(2)
∵|z1|=2|z2|,
∴|z2|=1/2|z1|=1/2*2^(1/6)=2^(-5/6)
∵ARGz2=ARGz1+π/2=3π/4
∴z2=2^(-5/6)(cos3π/4+isin3π/4)
what kind of後接名詞單數還是複數,求例句what kinds of後接名詞單數還是複數,求例句
單數和複數都可以.單數用得多一點.例如
what kind of transportation means do you like?
what kinds of food do you want?
what kinds of books are the most popular recently?
想一道關於複數的題目
已知複數z滿足z+(3+4i)=-1-2i,則z乘以z的共軛複數的值是什麼?最好能告訴我過程,謝謝.
∵z+(3+4i)=-1-2i
移項得,z=-1-2i-3-4i=-4-6i
∴z的共軛複數為-4+6i
∴z乘以z的共軛複數的值為:
(-4-6i)*(-4+6i)
=(-4)^2-24i+24i-36*i^2
=16+36
=52