>
数学
>
要使多项式x²-2分之1mxy+7y²+xy-x+1中不含xy项.那么m=?
人气:225 ℃ 时间:2019-09-09 18:16:41
解答
x²-1/2mxy+7y²+xy-x+1不含xy项,则
-1/2mxy+xy=0
(1-1/2m)xy=0
1-1/2m=0
1/2m=1
m=2
推荐
要使多项式x²-2分之1mxy+7y²-x-1中不含xy项,那么m=
若多项式x²-0.5mxy+7y²+xy-x+1的值与x无关,求m,n的值
要使多项式x的平方-1/2mxy+7y的平方+xy-x+1中不含xy项,则m=?
要使多项式x^-1/2mxy+7y^2+xy-x+1中不含xy项,那么m=( )
当h=多少时,多项式3X ²-2kxy-3y ²+5分之1xy+7y²中不含xy项
successful的比较级
设A为m×n实矩阵(m≠n).E是n×n单位矩阵,证明E+A∧TA是正定对称阵.
there are a lot of/There is a lot of?
猜你喜欢
已知f(x平方-1)的定义域为[-根号3,根号3],则f(2x-1)的定义域是
He's in a middle school in ______ now.
一个多面体有20个顶点,30条棱,它有( )个面,这个几何体是( )
小学有哪些前鼻音和后鼻音字
陌上花开有什么深层含义呢?可以写一篇什么样的记叙文呢?
it forces you to organize the time to decide which problems are more important and which are.
cos2x=cos(兀/4-x)求sin2x!
we need to pay more attention to the virses _____ _____ needs to be _____ to the viruses
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版