设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 02:50:04
设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
2log3(x-3y)=log3(3x+y)+log3y
log3(x-3y)^2=log3[y(3x+y)]
(x-3y)^2=y(3x+y)
x^2-6xy+9y^2=3xy+y^2
x^2-9xy+8y^2=0
(x-y)(x-8y)=0
x=y,x=8y
x>3y>0
则x=y显然不成立
所以x=8y
x/y=8
设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
设x>3y>0,2log3(x-3y)=log3(3x+y)+log3y,求x/y的值
y=log3(9/x)×log3 3x求值域!
设x,y都是正整数,且log3(x+y)=log3 x+log3 y,求x^y的值
已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2)
已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2)多少
y=根号3-2^x/log3(x+7)定义域
已知x满足(log3x)^2-log3 x-2≤0,求函数y=f(x)=log3 3x·log3 9x的值域已知x满足(log3x)^2-log3 x-2≤0,求函数y=f(x)=log3 3x·log3 9x的值域.3Q
Y=(log3 3x/x+1) 2的乘方 — log3 9(x+1)/x X log3 (x+1)2的乘方/9x 2的乘方 X是乘令T=log3 x+1/x ,用T表示Y
已知x²-2x-8≤0,则函数y=log3(x+3)log3(3x+9)的值域?
我们知道,函数3^x满足:3^0=1,3^x*3^y=3^(x+y)(x,y属于R).现以函数3^X为模型,则可以构造函数g(x)满足g(0)=1,g(x)*g(y)=g(x+y).同理,对于函数log3(x),满足log3(1)=0,log3(xy)=log3(x)+log3(y)(x>0.y>0),以函数log3(x)为模型可
求函数y=log3 (3x)*log3 (x/9) (1/3*是×
y=[log3(底数) x]的平方-log3(底数)x的平方+3的值域
点M(x,y)在第一象限,且满足2x+3y=6,求log3/2x+log3/2y的最大值急
已知x>y>0,log3(x-y/2)^2=log3(xy),则log3(根号x/y-根号2) 求全过程紧急求啊
求x,y值.6log9^x+3log27^y=8log3^x+2log9^y=2
已知函数y=(log3 x)²-2log3 x+3的定义域为[1,9],求函数的值域?
高一对数求值域.y=log3(x+2)+log3(4-x)的值域怎麼求?还有y=9^x + 3^(x+1) - 4的值域.