x:y:z=1:2:3,x+y+z=36(解方程组)(提示:x:y:z=1:2:3可变形为x/1=x/2=x/3)
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x:y:z=1:2:3,x+y+z=36(解方程组)(提示:x:y:z=1:2:3可变形为x/1=x/2=x/3)
x:y:z=1:2:3,x+y+z=36(解方程组)(提示:x:y:z=1:2:3可变形为x/1=x/2=x/3)
x:y:z=1:2:3,x+y+z=36(解方程组)(提示:x:y:z=1:2:3可变形为x/1=x/2=x/3)
X=6Y=12Z=18
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
x+y+z=6 x+2y+3z=14 y+1=z
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
若|x+3|+|y-2|+|2×z+1|=0求(x×z-y×z)(y-x+z)的值
已知 x/(y+z)+y/(z+x)+z/(x+y)=1求 (x*x)/(y+z)+(y*y)/(x+z)+(z*z)/(x+y)=?
matlab解对数方程组[x,y,z]=solve('0.29744*x/(3+0.1*x+y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)))^2','0.79*x/(3+0.1*y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.1*y+z)))^2','1.25*x/(3+0.1*z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.*1y+z)*(3+z)/
{x+y+z=1;x+3y+7z=-1;z+5y+8z=-2
如果,根号x-3+| y-2 |+z^2=2z-1 求 (x+z)^y
分式加减的几道题目求速度1 .(x+y)²/(x-z)(y-z) - (y+z)²/(x-z)(y-z) = 2.2x+3y/x-y+2y/y-x-3y/x-y=
证明 :x/(y+z)+y/(z+x)+z/(x+y)>=3/2其中 x,y,z>0
x/2=y/3=z/5 x+3y-z/x-3y+z
x+y/2=z+x/3=y+z/4 x+y+z=27
若x+y+z=3y=2z,则x/x+y+z=?
x+2y=3x+2z=4y+z 求x:y:z
x+2y=3 x+y+z=36 2x+y+z=15 2y=3z x-y=1 x+2y+z x-z=-1 2x+z-y=18 x+y+2z=17x+2y=3 2y=3z x-y=-1x+y+z=36 x-y=1 2x+z-y=18 2x+y+z=15 x+2y+z=16 x+y+2z=17
解一道方程,如下{x:y:z=1:2:3 x+y+z=36