集合A={y|y=x²-1,x∈R},B={y|y=-2x²+2,x∈R},求A∩B集合A={y|y=x²-1,x∈R}, B={y|y=-2x²+2,x∈R},求A∩B集合P={y|y=3x-1,x>1}, Q={y|y=-2x²+10,x∈R},求P∩Q
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 14:31:20
![集合A={y|y=x²-1,x∈R},B={y|y=-2x²+2,x∈R},求A∩B集合A={y|y=x²-1,x∈R}, B={y|y=-2x²+2,x∈R},求A∩B集合P={y|y=3x-1,x>1}, Q={y|y=-2x²+10,x∈R},求P∩Q](/uploads/image/z/2611594-10-4.jpg?t=%E9%9B%86%E5%90%88A%3D%7By%7Cy%3Dx%26%23178%3B-1%2Cx%E2%88%88R%7D%2CB%3D%7By%7Cy%3D-2x%26%23178%3B%2B2%2Cx%E2%88%88R%7D%2C%E6%B1%82A%E2%88%A9B%E9%9B%86%E5%90%88A%3D%7By%7Cy%3Dx%26%23178%3B-1%2Cx%E2%88%88R%7D%2C+B%3D%7By%7Cy%3D-2x%26%23178%3B%2B2%2Cx%E2%88%88R%7D%2C%E6%B1%82A%E2%88%A9B%E9%9B%86%E5%90%88P%3D%7By%7Cy%3D3x-1%2Cx%26gt%3B1%7D%2C+Q%3D%7By%7Cy%3D-2x%26%23178%3B%2B10%2Cx%E2%88%88R%7D%2C%E6%B1%82P%E2%88%A9Q)
集合A={y|y=x²-1,x∈R},B={y|y=-2x²+2,x∈R},求A∩B集合A={y|y=x²-1,x∈R}, B={y|y=-2x²+2,x∈R},求A∩B集合P={y|y=3x-1,x>1}, Q={y|y=-2x²+10,x∈R},求P∩Q
集合A={y|y=x²-1,x∈R},B={y|y=-2x²+2,x∈R},求A∩B
集合A={y|y=x²-1,x∈R}, B={y|y=-2x²+2,x∈R},求A∩B
集合P={y|y=3x-1,x>1}, Q={y|y=-2x²+10,x∈R},求P∩Q
集合A={y|y=x²-1,x∈R},B={y|y=-2x²+2,x∈R},求A∩B集合A={y|y=x²-1,x∈R}, B={y|y=-2x²+2,x∈R},求A∩B集合P={y|y=3x-1,x>1}, Q={y|y=-2x²+10,x∈R},求P∩Q
1、
y=x²-1≥-1
y=-2x²+2≤2
所以A∩B={y|-1≤y≤2}
2、
x>1,则y>3-1=2
y=-2x²+10≤10
所以p∩Q={y|2≤y≤10}
[一1,2]
(2,10]