log2a1+log2a2+log2a3+.+log2a10=25求a5×a6
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/31 14:42:20
![log2a1+log2a2+log2a3+.+log2a10=25求a5×a6](/uploads/image/z/6147770-50-0.jpg?t=log2a1%2Blog2a2%2Blog2a3%2B.%2Blog2a10%3D25%E6%B1%82a5%C3%97a6)
x;0@TIR,,*@a
M(7)?$"''qd]@jFqe.W 1@v/QdY`[q͝S%oCq$0߭:A;0"juA'cx*fE(4mj<]SY(H4ʥ
JU[za5e˓̵"t 1$R7²
log2a1+log2a2+log2a3+.+log2a10=25求a5×a6
log2a1+log2a2+log2a3+.+log2a10=25求a5×a6
log2a1+log2a2+log2a3+.+log2a10=25求a5×a6
log2a1+log2a2+log2a3+.+log2a10
=log(2)(2a1*2a2*2a3*……2a^10)
=log(2)(2^10*a1*a2*a3……a10)
=10+log(2)(a1*a2*a3……a10)=25
log(2)(a1*a2*a3……a10)=15
a1*a2*a3……a10=2^15
若a1、a2、a3……a10是等比数列,
则a1*a2*a3……a10=(a5*a6)^5 a5*a6=2^3=8
log2a1+log2a2+log2a3+。。。+log2a10=log2a^55=25
2^25=a^55
a5×a6=a^11=2^5=32
log2a1+log2a2+log2a3+.+log2a10=25求a5×a6
q=2 log2a1+log2a2+log2a3+...+log2a10=25则a1+a2+a3+.+a10=
等比数列{an}中,公比q=2,log2a1+log2a2+log2a3+...+log2a10=25,则a1+a2+...+a10=
在等比数列an中,公比q=1/2,且log2a1+log2a2+log2a3+..log2a10=55,则a1+..a10=
已知等比数列an满足an>0,且a1an=2^(n+1),则log2a1+log2a2+log2a3+...log2a6=?为什么等于21.
各项均为正数的等比数列an若a3成a10加a6成a7等于16求log2a1+log2a2+log2a3+````+log2a12值
正等比数列中,A4A5=32,LOG2A1+LOG2A2+...+LOG2A8=?
{an}成等比,an>0,a1=2,4(a3)²=a2*a6.设bn=log2a1+log2a2+log2a3+...+log2an(1)求{1/bn}前n项和Tn(2)若7+kan≥(n+1),Tn对任意正整数n恒成立,求k的范围ps:上面标题中为 log 以2为底的对数
在等比数列an中,a5=16,则log2a1+log2a2+.+log2a9=
在等比数列{an}中,若a5=2,则log2a1+log2a2+.+log2a9=
在等比数列{an}中,log2a1+log2a2+.+log2a10=35q=2求a1+a2+。。。。。+a10
等比数列公比为2,log2a1+log2a2+.llog2a10=25,求a1+a2+a3+.+a10
等比数列中,a4.a5=32,求log2a1+log2a2+…+log2a8的值
GP中,{an}中,an>0.a4*a5=32 求log2a1+log2a2+…+log2a8
各项为正数的等比数列,a4.a7=8,log2a1+log2a2+…+log2a10=?
已知{log2an}为等比数列,且满足log2a1+log2a2+...log2a12=12,则a6*a7=
若{an}(an>0)成等比数列,a1a100=64,求log2a1+log2a2+…+log2a100
等比数列{an}中,an>0,a3*a4=4,则log2a1+log2a2+.log2a6=?