If x, y and z are non - zero numbers such that x y≤1 and xy=z, which of the following can be true?①yz;②y=z;③z=x;④xz;⑤x0 . 相关知识点: 试题来源: 解析 如果x,y,z都是非零实数,且xy≤1, xy=z,则下面选项可能成立的有 ①yz; ②y =z;③z=x; ④x z; ⑤x 0...
x+y 3 and xy+x=0 Solving for y in the top equation gives us 3-x.Plugging this in gives us:x-x2+3x 0.Since we're told x is not zero,we can divide by x, giving us:x-x+3=0 The discriminant of this is (-1)2-4(1)(3)=-11,which means the equation has no real ...
If x, y, z are non-zero real numbers, then the inverse of matrix A=[(... 02:36 If A=[(alpha, 0,0),(0,b,0),(0,0,c)] and a,b,c are non zero real number... 03:22 The inverse of the matrix [(0,0,1),(0,1,0),(1,0,0)] is (A) [(0,0,1),(0... 02:...
[" 1.If "z" and "omega" are two non-zero complex numbers such that "],[|z omega|=1" and "Arg(z)-Arg(omega)=(pi)/(2)," then "bar(z)omega" is equal to "] View Solution Letzandwbe two non-zero complex number such that|z|=|w|andarg(z)+arg(w)=π, thenzequals.w(b...
If a and b are nonzero numbers on the number line, is 0 between a and b ?(1) The ...
If x, y and z are non-zero numbers such that 1≥y>x and xy=z, which of the following cannot be true ?() A.y>z B.y=z C.z=x D.x>z E.z>0 相关知识点: 试题来源: 解析 B [解析] 因为当y=z时,将有x=1成立,而根据1≥y>x可知,x=1是不可能的,所以y=z不能成立;...
百度试题 结果1 题目If a and b are nonzero real numbers and a b b2-a2 -ab find A2. 相关知识点: 试题来源: 解析 [。 0 0 反馈 收藏
If z1 and z2 are two complex numbers such that ∣∣∣z1−z2z1+z2∣∣∣=1, then View Solution If z1,z2 are two complex numbers such that Im(z1+z2)=0,Im(z1z2)=0, then: View Solution If z and ω are two non-zero complex numbers such that |zω|=1 and arg(z)−...
这道题的关键实在理解 y^2=x^2 x和y的关系, 它们可以是同号也可以不是同号的....
Areal and distinct Bral and equal Cimaginary Dnothing can be saidSubmit If a, b, c, d, x are distinct non zero real numbers such that (a2+b2+c2)x2−2(ab+bc+cd)x+(b2+c2+d2)≤0, then a, b, c, d are in AA.P. BH.P. CG.P. DNone of theseSubmit ...