等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 17:34:33
![等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=](/uploads/image/z/7861658-50-8.jpg?t=%E7%AD%89%E6%AF%94%E6%95%B0%E5%88%97%2Can%E5%A4%A7%E4%BA%8E0%2Ca3%2Aa6%2Aa9%3D4%2C%E5%88%99log2a2%2Blog2a4%2Blog2a6%2Blog2a8%2Blog2a10%3D)
x){)Ϧnx1]'1Ov$k%i%Zښ<혙nh
L P6IET4MΆڮ{6cKA-mA
Ov/,'H0D+O YZ`鴅Y@F 1w0Ov삸Y#L3H`c_6-~Xg)eB. 6TTX̆Y0Aw5 aӢ
等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=
等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=
等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=
易知a3*a9=a6*a6
所以a6*a6*a6=4
而a2*a10=a6*a6
a4*a8=a6*a6
log2a2+log2a4+log2a6+log2a8+log2a10=log2(a2*a10*a4*a8*a6)=a6*a6*a6*a6*a6=10/3
因为a3*a9=(a6)^2
所以(a6)^3 =4
那么log2a2+log2a4+log2a6+log2a8+log2a10=log2 a2*a4*a6*a8*a10=log2 (a6)^5 =5log2 a6=5/3 log2 (a6)^3 =5/3 log2 4=10/3
等比数列,an大于0,a3*a6*a9=4,则log2a2+log2a4+log2a6+log2a8+log2a10=
等差数列{an}中,公差d≠0,且a1,a3,a9成等比数列,则(a3+a6+a9)/(a4+a7+a10)=
已知等差数列{an}的公差d≠0,且a1,a3,a9成等比数列,则(a3+a6+a9)/(a4+a7+a10)=____
等比数列{an}中a3,a9是方程x²+3x+1=0的两个根,则a6=
在等差数列an中,公差大于0,a3+a6+a9=12,a3a6a9=28,则an=
已知在等比数列{an}中,a3=-2,a6=54,则a9=
在等比数列an中,a3=-54,a6=54,则a9=
等比数列an中,公比q=2,s99=56,则a3+a6+a9+.+a99=
已知{an}是等比数列,a6=6,a9=9,则a3=?
等比数列{an}中,如果a6=6,a9=9,那么a3=?
·an是等比数列,A6=6,A9=9,则A3=?
{an}为等比数列,a6=6,a9=9,则a3=?
等比数列an中,若a6=6,a9=9,那么a3=
在等比数列{an}中,a1+a3=5,a4+a6=10,则a7+a9=
在等比数列{an}中,a3=2,a6=6,则a9=?
在等比数列an中,若a3=2,a9=8,则a6=RT
已知等比数列{an}中,如果a6=6,a9=9,那么a3的值是?
等比数列{an}中,a3=1/2,a9=8,求a5×a6×a7