微观粒子波粒二象性:问大家一题1/x-1/y=3 求(2x=3xy-2y)/(x-2xy-y)
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问大家一题1/x-1/y=3 求(2x=3xy-2y)/(x-2xy-y)
x, y>0。求证x/y+y/x+xy>x+y+1
1/4(x+y)+1/2(x+y)*(x+y)>=x*根号y+y*根号x
2/(x-y)+x/y-1/x
已知X+Y=-4,求1/2(X+Y)+4(X-Y)-3(X-Y)-3/2(X+Y)-X+Y
因式分解1/(x+y)
已知数x、y、z满足x/y+z + y/z+x +z/x+y=1,求
求1/4(x+y)+1/2(x+y)*(x+y)的最值
x^2+y^2+1/2=x+y,则x= ,y= .
高一数学题 已知a ,b为正常数 x, y为正实数 且a/x+b/y=1,则x+y的最小值