已知X+1/Y=1,Y+1/2Z=1,求Z+1/2X的值
。
人气:162 ℃ 时间:2020-04-23 05:50:51
解答
1/2
x=1-1/y
z=1/2(1-y)
z+1/2x=1/2(1-y)+y/2(y-1)=1/2[1/(1-y)+y/(y-1)]=1/2
推荐
- 已知x:y:z=1:3:5,求(2x+3y-z)/(x+y-2z)的值
- 已知{x2y=1 y+2z=2 2x+z=3},则x+y+z的值为?
- 已知X,Y,Z满足|3X-2Y+Z|+|2X+Y+2Z|=0(X,Y,Z≠0),求(X+Y)/Z的值
- 1.已知:X+Y+Z=3Y=2Z,求X/X+Y+Z的值 2.已知:1/X-1/Y=3,求2X+3XY-2Y/X-2XY-Y的值
- 已知x+y+z=2x-y=3x+2z,求x:y:z的值
- 已知点A(0,2/n),B(0,−2/n),C(4+2/n,0),其中n的为正整数.设Sn表示△ABC外接圆的面积,则limn→∞Sn=_.
- Why do we have winds?1.The sun shines on the ground.2.3.The air near the ground becomes warm.
- △ABC的三边长a、b、c是三个连续的偶数,且△ABC的周长为24cm,求a、b、c.
猜你喜欢