设A={x|2X^2+aX+2=0},B=[X|X^2+3X+2a=0},且AUB={2,5,0.5},求A∩BX^2是X的2次方
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 15:37:02
![设A={x|2X^2+aX+2=0},B=[X|X^2+3X+2a=0},且AUB={2,5,0.5},求A∩BX^2是X的2次方](/uploads/image/z/2572419-3-9.jpg?t=%E8%AE%BEA%3D%7Bx%7C2X%5E2%2BaX%2B2%3D0%7D%2CB%3D%5BX%7CX%5E2%2B3X%2B2a%3D0%7D%2C%E4%B8%94AUB%3D%7B2%2C5%2C0.5%7D%2C%E6%B1%82A%E2%88%A9BX%5E2%E6%98%AFX%E7%9A%842%E6%AC%A1%E6%96%B9)
x){nmuEQDvbAmtD
H(yccmiγM:V:U=>gk>&HbS`_`gCG'c1DƧ<ٱͪΆ't[gӷ=]ɮ>G?73VT"f@XV2г07:0 ճ9 @mp)|E3n~9e9+6<ɮ%/g=t6 Z|MF 1 )I(
设A={x|2X^2+aX+2=0},B=[X|X^2+3X+2a=0},且AUB={2,5,0.5},求A∩BX^2是X的2次方
设A={x|2X^2+aX+2=0},B=[X|X^2+3X+2a=0},且AUB={2,5,0.5},求A∩B
X^2是X的2次方
设A={x|2X^2+aX+2=0},B=[X|X^2+3X+2a=0},且AUB={2,5,0.5},求A∩BX^2是X的2次方
设A={x|2X^2+aX+2=0,B=[X|X^2+3X+2a=0},AUB={2,5,0.5},
因为AUB={2,5,0.5},所以1)当X=2时对于A,解得
a=-5,对于B解得a=-5.2)当X=5时对于A,解得
a=-52\5,对于B解得a=-20 3)当X=0.5时对于A解得a=-5
对于B解得a=-0.875所以A∩B={x|X=2}
只有a=-5时A=B.所以A∩B={x|X=2}
这题关键在于理解交集与并集的意义了.
设集合A={x/x^2-3x-4>0},B={x/x^2-ax+b
设f(x)=x^2+ax+b,且0
线性代数2,设AX+B=X
设集合A={x|2x^2-ax+b=0},B={x|x^2+6x+8,x∈R},求A∩B
设lim(x->无穷大)((1+x^2+x^3)^1/3-ax-b)=0,求a= ,b= .
设lim((x^2+1)/(x+1) -ax-b)=0,求a,b.x趋向无穷大
设lim((x^2+1)/(x+1) -ax-b)=0,求a,b. x趋向无穷大
设不等式x^2-ax-8>=0与x^2-2ax-b
设lim[(x^2+2x+3)^1/2-ax]=b,求a,b
f(x)=Inx-ax^2+2x-ax 设a>0 证明 当0
设集合A={x|x^2-2ax+3
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设函数f(x)=-1/3x^3+2ax^2-3a^2x+b,0
设集合A={x|log1/2(6+x-x^2)>-2},B={x|根号下ax-a^2|