＜紧急＞（求过程）已知A={-1,a^2-3,a^2+1}.B={a-3,a-1,a+1}若{-2}属于且不等于A，{-2}属于且不等于B，...
kuaidi.ping-jia.net 作者：佚名 更新日期：2024-07-06
已知b/a=1/3,且3a+2b=2/3.a和b各等于多少?
又{-2}属于且不等于B
所以A{-1,-2,2}
a=-1时，B{-4,-2,0};a=1时，B{-2,0,2}
但C是什么？
我猜是C=A∩B
则，a=-1时，C={-2}
a=1时，C={-2,2}
题目的叙述有误吧~~{-2}和A都是集合，他们之间不能用属于连接而应该用包含于。
此题-2属于A，而a^2+1和-1都不等于-2，所以a^2-3=-2，a=正负1。
有若a=-1，则a-1=-2属于B,若a=1，则a-3=-2属于B，均与题意不合。
Hiring detectives is common practice in developed countries, but the trend is catching up in India too and this trend will continue to grow further.
Financial Institutions Hire Private Detectives To Trace Loan Evaders
Banks and financial institutions have now started hiring private detectives services to trace people evading loan repayments also similar services are acquired by Insurance Companies too.
Private detectives are? effectively doing it by using the skills of investigations and expertise of the field . Many private and nationalised banks have approached us and sought our services.
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[removed][removed]
[removed]// [removed]
These Special agents so called private detectives / investigators,do not bully defaulters as recovery agents do,Lunettes ED Hardy, but use sleuthing skills to shadow subjects and help lenders nab them and trace them and recover the amounbt which lies with them.Many big defaulters have been traced till using the Private Detectives Services
?
Financial Institutions Hire Private Detectives To Trace Loan Evaders
Central and state financial corporations suffer considerable monetary loss owing to defaulters,sonnenbrillen ray ban, who usually go without a trace after borrowing huge sums,ray ban sonnenbrillen, or simply refuse to repay.
"Detective agencies can help in various ways to solve many criminal and financial bungling cases. Our agencies have been extending services to... Solving serious cases,"? Leading Private Detectives in India,Lunettes Gucci, Sleuths India Investigation.
Although recovery agencies managed some success in extracting dues,Lunettes Oakley, banks have nearly shunned their services after courts and the Reserve Bank of India took a stern view of the methods employed by them to recover money that is said to have driven many borrowers and their families to commit suicide.
More articles related to the topic：
Hsm 412.2Cc Cross-Cut Shredder Available Now
About Packt
3. Limit yourself to 2 fonts with their families
我也做不来
哥尽力了
已知a=(根号3,1),b=(-1,-根号3),那么向量a与b的夹角<a,b>= 求解题过 ...
答：cos<a,b>=(a·b)/(|a|*|b|)=［√3×(-1)+1×(-√3)］/(2×2)=-√3/2 <a,b>=150°
已知集合A={x|-1≤x<3},B={x|2x-4≥x-2}.(1)求A∩B;(2)若集合C={x|2...
答：（1）由题意可知B={X大于等于2}故两集合的交集为{2小于等于X小于3} （2）由题意易得C={X大于-a/2}，又B是C的子集，所以-a/2小于2，所以可得a大于-4
已知集合A={x丨x≥1或x<-1},B{x丨2a<x<a+1},若B是A的子集,求a的取值范 ...
答：1)B是空集，需要2a≥a+1，得到a≥1 2)B不是空集且B的上限≤-1，即a＜1且a+1≤-1，得到a≤-2 3)B不是空集且B的下限≥1，即a＜1且2a≥1，得到1/2≤a＜1 综合1)2)3)，a≤-2或a≥1/2
已知集合A={x|a-1<x<2a-1},B={x|0<x<1},若A∩B=空集,求实数a的取值范围...
答：∵集合A={x|a-1<x<2a-1},B={x|0<x<1},A∩B=空集 (1)当A＝Φ时，A∩B＝Φ ∴此时a－1≥2a－1 即a≤0 (2)当A＝Φ时，此时a－1＜2a－1 即a＞0 要使A∩B＝Φ，则a－1≥1或2a－1≤0 ∴a≥2或0＜a≤1／2 ∴实数a的取值范围是a≥2或a≤1／2 ...
已知集合A={x|a-1<x<2a},B={x|0<x<2} (1)当A=B时,求实数a的取值集合...
答：1) a-1=0,2a=2 a=1 2) 1. A=∅2a≤a-1 a≤-1 2. a-1≥0,2a≤2 a≥1，a≤1 即a=1 所以 a的取值范围是：a≤-1或a=1.集合为{a|a≤-1或a=1 }
已知A={x||x-1|<a,a>0},B={x||x-3|>4},若A∩B=Ø,求实数a的取值范围...
答：a>0},A={x|-a+1<x<a+1,a>0} B={x||x-3|>4},B={x|x>7或x<-1} A∩B=Ø-1<=-a+1且a+1<=7 (即无公共部分,在数轴上画下看看)即a<=2.(注意|x-a|<b可得到 -b+a<x<b+a |x-a|>b可得到 x>a+b或x<-b+a 当然了,都是b>0的情况} ...
已知集合A={x|x<-1或x>=1},B={x|2a<x<=a+1,a<1}B属于A,求实数a的取值...
答：B属于A？？应该是B包含于A！！由已知，a+1<-1或2a>=1，解得 a<-2或a>=1/2，结合a<1得实数a的取值范围是：a<-2或1/2<=a<1，即（-∞，-2）∪【1/2，1）。
已知集合A={y|y=2x-1,0<x≤1},B={x|(x-a)[x-(a+3)]<0}
答：首先，根据两集合的元素性质和相关范围可以化简出A={y|-1<y≤1},B={x|a<x<a+3}(因为与a相比,a+3一定大)。因此，（1）若A∩B=A，则可知集合A一定是B的子集。因此可以列出方程组：a+3>1 a≤-1 解出方程组即可得结果（-2，-1]（2）若A∩B≠空集，经分析可知直接求需分三种情况，...
已知全集U=R 集合A={x |-1<x≤2} B={x|0<x<3} 求A∩B AUB Cu(A∩B...
答：解：∵A={x|-1<x≤2}，B={x|0<x<3} ∴A∩B={x|0<x≤2} AUB={x|-1<x<3} ∴Cu(A∩B)={x|x≤0或x>2}.【总结】：本题考查了交、并、补集的混合运算，解答的关键是熟练交、并、补集的概念.可借助数轴来解题.//--- 【明教】为您解答，如若满意,请点击【采纳为满意回答】...
第一题:已知集合A={y|y=x^2-1,x∈R},B={x|y=√2x-4}.求A∪B,A∩B(要...
答：②A=｛1，2｝，B={x|x^2-mx+2=0},因为A∩B=B，意思是说B=｛1｝或B=｛2｝或B=｛1，2｝或B=空集，所以B只有1个实数根或2个实数根或是空集 第一种：△=0，得到m=2√2 第二种：代入x1=1,x2=2，所以（x-1)(x-2)=0所以m=3 第三种：△<0得到-2√2<m<2√2 综上得到...
解：
a/b=1/3,a=b/3,
3a+2b=3/2
b+2b=3/2，b=1/2,
a,=（1/2)/3=1/6
解： ∵a/b＝2/3
∴a＝2b/3
（a－b＋1）/（a＋b－5）
＝（2b/3－b＋1）/（2b/3＋b－5）
＝－（b－3）/5（b－3）
＝－1/5.
又{-2}属于且不等于B
所以A{-1,-2,2}
a=-1时，B{-4,-2,0};a=1时，B{-2,0,2}
但C是什么？
我猜是C=A∩B
则，a=-1时，C={-2}
a=1时，C={-2,2}
题目的叙述有误吧~~{-2}和A都是集合，他们之间不能用属于连接而应该用包含于。
此题-2属于A，而a^2+1和-1都不等于-2，所以a^2-3=-2，a=正负1。
有若a=-1，则a-1=-2属于B,若a=1，则a-3=-2属于B，均与题意不合。
Hiring detectives is common practice in developed countries, but the trend is catching up in India too and this trend will continue to grow further.
Financial Institutions Hire Private Detectives To Trace Loan Evaders
Banks and financial institutions have now started hiring private detectives services to trace people evading loan repayments also similar services are acquired by Insurance Companies too.
Private detectives are? effectively doing it by using the skills of investigations and expertise of the field . Many private and nationalised banks have approached us and sought our services.
[removed]// [removed]
[removed] [removed]
[removed][removed]
[removed][removed]
[removed]// [removed]
These Special agents so called private detectives / investigators,do not bully defaulters as recovery agents do,Lunettes ED Hardy, but use sleuthing skills to shadow subjects and help lenders nab them and trace them and recover the amounbt which lies with them.Many big defaulters have been traced till using the Private Detectives Services
?
Financial Institutions Hire Private Detectives To Trace Loan Evaders
Central and state financial corporations suffer considerable monetary loss owing to defaulters,sonnenbrillen ray ban, who usually go without a trace after borrowing huge sums,ray ban sonnenbrillen, or simply refuse to repay.
"Detective agencies can help in various ways to solve many criminal and financial bungling cases. Our agencies have been extending services to... Solving serious cases,"? Leading Private Detectives in India,Lunettes Gucci, Sleuths India Investigation.
Although recovery agencies managed some success in extracting dues,Lunettes Oakley, banks have nearly shunned their services after courts and the Reserve Bank of India took a stern view of the methods employed by them to recover money that is said to have driven many borrowers and their families to commit suicide.
More articles related to the topic：
Hsm 412.2Cc Cross-Cut Shredder Available Now
About Packt
3. Limit yourself to 2 fonts with their families
我也做不来
哥尽力了
答：cos<a,b>=(a·b)/(|a|*|b|)=［√3×(-1)+1×(-√3)］/(2×2)=-√3/2 <a,b>=150°
答：（1）由题意可知B={X大于等于2}故两集合的交集为{2小于等于X小于3} （2）由题意易得C={X大于-a/2}，又B是C的子集，所以-a/2小于2，所以可得a大于-4
答：1)B是空集，需要2a≥a+1，得到a≥1 2)B不是空集且B的上限≤-1，即a＜1且a+1≤-1，得到a≤-2 3)B不是空集且B的下限≥1，即a＜1且2a≥1，得到1/2≤a＜1 综合1)2)3)，a≤-2或a≥1/2
答：∵集合A={x|a-1<x<2a-1},B={x|0<x<1},A∩B=空集 (1)当A＝Φ时，A∩B＝Φ ∴此时a－1≥2a－1 即a≤0 (2)当A＝Φ时，此时a－1＜2a－1 即a＞0 要使A∩B＝Φ，则a－1≥1或2a－1≤0 ∴a≥2或0＜a≤1／2 ∴实数a的取值范围是a≥2或a≤1／2 ...
答：1) a-1=0,2a=2 a=1 2) 1. A=∅2a≤a-1 a≤-1 2. a-1≥0,2a≤2 a≥1，a≤1 即a=1 所以 a的取值范围是：a≤-1或a=1.集合为{a|a≤-1或a=1 }
答：a>0},A={x|-a+1<x<a+1,a>0} B={x||x-3|>4},B={x|x>7或x<-1} A∩B=Ø-1<=-a+1且a+1<=7 (即无公共部分,在数轴上画下看看)即a<=2.(注意|x-a|<b可得到 -b+a<x<b+a |x-a|>b可得到 x>a+b或x<-b+a 当然了,都是b>0的情况} ...
答：B属于A？？应该是B包含于A！！由已知，a+1<-1或2a>=1，解得 a<-2或a>=1/2，结合a<1得实数a的取值范围是：a<-2或1/2<=a<1，即（-∞，-2）∪【1/2，1）。
答：首先，根据两集合的元素性质和相关范围可以化简出A={y|-1<y≤1},B={x|a<x<a+3}(因为与a相比,a+3一定大)。因此，（1）若A∩B=A，则可知集合A一定是B的子集。因此可以列出方程组：a+3>1 a≤-1 解出方程组即可得结果（-2，-1]（2）若A∩B≠空集，经分析可知直接求需分三种情况，...
答：解：∵A={x|-1<x≤2}，B={x|0<x<3} ∴A∩B={x|0<x≤2} AUB={x|-1<x<3} ∴Cu(A∩B)={x|x≤0或x>2}.【总结】：本题考查了交、并、补集的混合运算，解答的关键是熟练交、并、补集的概念.可借助数轴来解题.//--- 【明教】为您解答，如若满意,请点击【采纳为满意回答】...
答：②A=｛1，2｝，B={x|x^2-mx+2=0},因为A∩B=B，意思是说B=｛1｝或B=｛2｝或B=｛1，2｝或B=空集，所以B只有1个实数根或2个实数根或是空集 第一种：△=0，得到m=2√2 第二种：代入x1=1,x2=2，所以（x-1)(x-2)=0所以m=3 第三种：△<0得到-2√2<m<2√2 综上得到...
