log(2)(x)log(2)(4x)-3log(2)(x)-12=0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/13 17:49:16
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
令a=log2(x)
则log2(4x)=log2(4)+log2(x)=2+a
所以a(2+a)-3a-12=0
a²-a-12=0
(a-4)(a+3)=0
a=4,a=-3
a=log2(x),所以x=2^a
所以x=16,x=1/8
log(0.5x)(2)-log(0.5x^3)(x^2)=log(0.5x^3)(4)
[( log(x^2) + log(x^4) )/ log(100 x)] = 4 求X
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
简化2log (x + 4) – log(2x + 8) + log(x - 2)谢谢~
(log(2)(x))^3-4(log(4)(x))^2+log(16)(x)=0
2log(m)y-log(m)x-log(m)z
已知log(2)[log(3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x+y的值
2 log(3x)= log 4 +log(6-x)怎么求...急
已知log(2){log(3)[log(4)(x)]}=5^0,则x=?
log(2)(x+4)=3^x
若log底数2[log底数3(log底数4)]若log底数2[log底数3(log底数4(x))]=log底数3[log底数4(log底数2(y))]=log底数4[log底数2(log底数3z)]=0,则x+y+z=
1/log(2)x+1/log(3)x+1/log(4)x=1,x=?
log(x+5)=log(x)+log(2) log(8)+log(x)=log(24) 2log(x)=log(2x)+log(3)
试解关于x的不等式log(2)x+4log(3)x+12log(8)x+n·2^(n-1)·log(2^n)x
对数计算1.{log(4)(3)+ log(8) (3)} X {log(3)(2)+log(9)(2)}2.{log(2)(3)} X {log(3)(4)+log(9)(2)}3.(lg2)^+1g2X 1g5 +1g50
解方程3log(x)4+2log(4x)4+3log(16x)4=0
solve:log(x)+log(2x)=2
解方程:log√x 2x=4log√x 2x=4