x∧2+y∧2+1>2(x+y)对吗?怎么证明?
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/22 16:54:38
x∧2+y∧2+1>2(x+y)对吗?怎么证明?
x∧2+y∧2+1>2(x+y)对吗?怎么证明?
x∧2+y∧2+1>2(x+y)对吗?怎么证明?
不对.若两个变量分别是1和0.5,这个不等式就不成立了.
不对,为什么
x∧2+y∧2+1>2(x+y)对吗?怎么证明?
1. -(mn-1)+(m-n)=-mn+1+m+n2. x-(5x-3y)+(2x--y)=-2x+2y计算结果对吗
(xy-x^2)乘以(xy)/(x-y)= x(y-x)乘以(xy)/(x-y)= -x(x-y)乘以(xy)/(x-y)= -x^2y这样做对吗?
4x立方-2x方y=x方(4x-2y)对吗
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
dx/dy=x/y+[cos(x/y)]∧2,y(0)=1
根号x+y-1+(y+3)∧2 求x-y
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
计算 (-x+y)∧4×(x-y)∧2×(y-x)∧3
计算:1/(2x) - 1/(x+y)((x+y)/(2x) - x - y)
化简1/2x-1/x+y(x+y/2x-x-y)
计算2x/1-x+y/1·(2x/x+y-x-y)
1/2x-(x+y/2x -x-y)÷(x+y)
化简y(x+y)+(x+y)(x-y)-x^2
(x-2y)(x+y)+(x+y)计算
计算:(x-y)^2-(x+y)(x-y)
2(x-y)²-3(x-y)(-y-x)