10^x=2,10^y=3,求100^2x-(1/4y)的值
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/21 21:03:06
10^x=2,10^y=3,求100^2x-(1/4y)的值
10^x=2,10^y=3,求100^2x-(1/4y)的值
10^x=2,10^y=3,求100^2x-(1/4y)的值
100^[2x-(1/4)y]
= 10^[4x-(1/2)y]
= 10^(4x) / 10^[(1/2)y]
= (10^x)^4 / (10^y)^(1/2)
= 2^4 / 3^(1/2)
= 16 / √3
= (16/3)√3
(16/3)√3
不解方程组2x-y=10 x+3y=1/100 求(2x-y)²-(2x-y)²(x-4y)的值
x,y 满足x(x-2)-y(y-6)=-10,求x,y的值
X+Y=10,X^3+Y^3=400,求X^2+Y^2
已知x+y=10,x^3+y^3=400,求x^2+y^2
x+y=2,3x+7y=10 求x和y
(x+y-5)+|3y-2x+10|=0,求 x,y的值
已知x+y=10,x^3+y^3=100,求x^2+y^2的值.
1.已知x++y=10,x^3+y^3=100,求x^2+y^2的值
x^2+4y^2-6x+4y+10=0,求x^4-y^4/(x+2y)(x-2y)*x+2y/xy^2+y^3除以(x^2+y^2/y)^2的值
2x+3y=100 求x+y=?
x^2+y^2=10,x-y=4,求x,y x+y=-5,xy=4,求x-y x+y=9,xyx^2+y^2=10,x-y=4,求x,y x+y=-5,xy=4,求x-yx+y=9,xy=10,求x^2+y^2,x^3+y^3,x^4+y^4
已知x^2-4x+y^2-10y+29=0,求x^2y^2+2x^3y^2+x^4y^2的值
若x^2-4x+y^2-10y+29=0,求x^2y^2+2x^3y^2+x^4y^2的值
已知X^2-4X+Y^2-10Y+29=0,求X^2Y^2+2X^3Y^2+X^4Y^2
已知x^2-4x+29-10y+y^2=0,求x^2y^2+2x^3y^2+x^4y^2
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知方程组2x-y=10,x+2y=11,求(2x-y)³-(2x-y)²(x-3y)的值
x²-2x+y²+6y+10=0,求—9(x+y)²+(3x-2y)(2y+3x)的值