若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为其中3x是3的x次方,并不是3*x
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![若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为其中3x是3的x次方,并不是3*x](/uploads/image/z/14576351-23-1.jpg?t=%E8%8B%A5log23%2Clog2%EF%BC%883x-1%EF%BC%89%2Clog2%283x%2B37%2F3%29+%EF%BC%88x%E4%B8%BA%E6%AC%A1%E6%96%B9%2C2%E4%B8%BA%E5%BA%95%E6%95%B0%EF%BC%89%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E5%88%99x%E7%9A%84%E5%80%BC%E4%B8%BA%E5%85%B6%E4%B8%AD3x%E6%98%AF3%E7%9A%84x%E6%AC%A1%E6%96%B9%EF%BC%8C%E5%B9%B6%E4%B8%8D%E6%98%AF3%2Ax)
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若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为其中3x是3的x次方,并不是3*x
若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为
其中3x是3的x次方,并不是3*x
若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为其中3x是3的x次方,并不是3*x
log23 + log2(3x+37/3) = 2log2(3x-1)
log2[3*(3x+37/3)]=log2(3x-1)^2
3*(3x+37/3)=(3x-1)^2
9x+37=9x^2-6x+1
9x^2-15x-36=0
3x^2-5x-12=0
(3x+4)(x-3)=0
x1=3,x2=-4/3
又(3X-1)>0 ==> x>1/3
故 x=3
log2(12)-log23
若log23,log2(3x-1),log2(3x+37/3) (x为次方,2为底数)成等差数列,则x的值为其中3x是3的x次方,并不是3*x
(1/2)^3+log2(底)3(真数)3+log23是指数怎么解答案是-3/8
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根号下[(log23)2-4log23+4]+log2(24)=( )
4(log23)÷log2(1/8)的值log以2为底3的对数是4的指数
若(log23)x-(log53)x≥(log23)-y-(log53)-y,则( ).若(log23)^x-(log53)^x≥(log23)^-y-(log53)^-y,则( ).(A)x-y≥0 (B)x+y≥0 (C)x-y≤0 (D)x+y≤0ps:(log23)是以2为底3的对数.x与-y是指数.
log2(3),log2(3^x-1),log2(3^x+37/3)成等差数列,求x
|[log2(x)]^2-3log2(x)+1|
log2(x+1)>log2(3-x)
log2 (x + 3) + log2(x + 2) = 1log2 (x + 3) + log2(x + 2) = 1
log23*log34=2还是log2
已知a=log23+log2∨3 b=log29-log2∨3 c=log32比较大小
若1/2≤log2底x≤3,求函数y=(log2底x-1).(log2底x-2)的值域
若log32=log23的x次方,则x等于?
log2(2^x-1)log2(2^(x+2)-4=3log2(2^x-1)log2(2^(x+2)-4)=3
数学对数函数题若(log23)^x-(log53)^x>=(log23)^-y-(log530^-y,求证x+y>=0