a2=3a+3,a5=?

等差数列中a1+a2+a3+a4+a5=3,a1*a1+a2*a2+a3*a3+a4*a4+a5*a5=12求a1-a2+a3-a4+a5等差数列中a1+a2+a3+a4+a5=3,a1*a1+a2*

设A=(a1,a2,a3,a4,a5),a1,a3,a5线性无关,a2=3a1-a3-a5,a4=2a1+a3+6a5,b=a1+a3,求方程组Ax=b的通解设A=(a1,a2,a3,a4,a5),a

若等比数列{an}满足:a1+a2+a3+a4+a5=3,a1²+a2²+…a5²=12,则a1-a2+a3-a4+a5=?若等比数列{an}满足:a1+a2+a3+a4

若等比数列{an}满足：a1+a2+……a5+3,a1²+a2²……a5²=12,则a1-a2+a3-a4+a5=若等比数列{an}满足：a1+a2+……a5+3,a1&

如果向量组Aa1,a2,a3Ba1.a2.a3.a4Ca1a2a3a5又RA=RB=3RC=4证明Ra1a2a3a5-a4=4如果向量组Aa1,a2,a3Ba1.a2.a3.a4Ca1a2a3a5又R

如果向量组Aa1,a2,a3Ba1.a2.a3.a4Ca1a2a3a5又RA=RB=3RC=4证明Ra1a2a3a5-a4=4如果向量组Aa1,a2,a3Ba1.a2.a3.a4Ca1a2a3a5又R

等差数列中a3+a5=24,a2=3,a6?等差数列中a3+a5=24,a2=3,a6?等差数列中a3+a5=24,a2=3,a6?a3+a5等于a2+a6等于24a2等于3所以a6等于21∵a3+a

A.5a-4a=1B.(a2)3=a5C.2a2×3a3=6a5D.3a2+2a3=5a3哪个运算正确A.5a-4a=1B.(a2)3=a5C.2a2×3a3=6a5D.3a2+2a3=5a3哪个运算

假设A1:A5分别存储l,3,9,10,20则MAX(A1:A5)=_______；MIN(A2:A5,A4)=_______;MAX(A1:A3,A5)=_____假设A1:A5分别存储l,3,9,

已知A={a1,a2,a3,a4,a5},B={a1^2,a2^2,a3^2,a4^2,a5^2},ai属于N*,i=1,2,3,4,5,设a1＜a2＜a3＜a4＜a5,且A∩B={a1,a4},a1

等比数列中,an大于0,a2乘a4+2a乘3a5+a4乘a6=25,求a3+a5=多少?等比数列中,an大于0,a2乘a4+2a乘3a5+a4乘a6=25,求a3+a5=多少?等比数列中,an大于0,

lingoMODEL:sets:banci/1..12/:a1,a2,a3,a4,a5,b;endsetsmin=z;z=@smax(a1(1)+a2(1)+a3(1)+a4(1)+a5(1),a1(

设n维向量组A1,A2,A3,A4,A5,线性无关,B1=A1+A2,B2=A2+A3,B3=A3+A4,B4=A4+A5,B5=A5+A1,证明B1B2B3B4B5线性无关（2）设N阶矩阵A满足A^

在等差数列{an}中,若a2+a5=17,a2*a5=52,且a5>a2,求a5及an1、在等差数列{an}中,若a2+a5=17,a2*a5=52,且a5>a2,求a5及an在等差数列{an}中,若

等差数列{An}中,A2+A3+A4+A5=34,A2*A5=52,且A5>A2,求A5等差数列{An}中,A2+A3+A4+A5=34,A2*A5=52,且A5>A2,求A5等差数列{An}中,A2

已知a是方程x2-3x+1=0的根,求2a5-5a4+2a3-8a2/a2+1的值已知a是方程x2-3x+1=0的根,求2a5-5a4+2a3-8a2/a2+1的值已知a是方程x2-3x+1=0的根,

等比数列的前3项和为168,a2-a5=42,求a5,a7的等比中项?等比数列的前3项和为168,a2-a5=42,求a5,a7的等比中项?等比数列的前3项和为168,a2-a5=42,求a5,a7的

已知全集U={a1,a2,a3,a4,a5},B=已知A={a1,a2,a3,a4,a5},B={a1^2,a2^2,a3^2,a4^2.a5^2},其中a1,a2,a3.a4.a5属于Z,a1已知全

已知等比数列{an}满足a1+a2+a3+a4+a5=3,a1^2+a2^2+a3^2+a4^2+a5^2=12,求a1-a2+a3-a4+a5=?已知等比数列{an}满足a1+a2+a3+a4+a5

一道关于数列的题目,本人不会做...a1+a2+a3+a4+a5=3a1的平方+a2的平方+a3的平方+a4的平方+a5的平方=12求a1-a2+a3-a4+a5一道关于数列的题目,本人不会做...a