1.设全集U=R,A=(x丨|x|>1),B=(x丨x-0.5≥0),求CuA∪CuB,CuA∩CuB 2.已知集合A=(x丨x^2+3x+2<0),B=(x丨x^2+2x=0),全集U=R,求CuA∩CuB,CuA∩B
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![1.设全集U=R,A=(x丨|x|>1),B=(x丨x-0.5≥0),求CuA∪CuB,CuA∩CuB 2.已知集合A=(x丨x^2+3x+2<0),B=(x丨x^2+2x=0),全集U=R,求CuA∩CuB,CuA∩B](/uploads/image/z/4326551-71-1.jpg?t=1.%E8%AE%BE%E5%85%A8%E9%9B%86U%3DR%2CA%3D%EF%BC%88x%E4%B8%A8%7Cx%7C%3E1%EF%BC%89%2CB%3D%EF%BC%88x%E4%B8%A8x-0.5%E2%89%A50%EF%BC%89%2C%E6%B1%82CuA%E2%88%AACuB%2CCuA%E2%88%A9CuB+2.%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BC%88x%E4%B8%A8x%5E2%2B3x%2B2%EF%BC%9C0%EF%BC%89%2CB%3D%EF%BC%88x%E4%B8%A8x%5E2%2B2x%3D0%29%2C%E5%85%A8%E9%9B%86U%3DR%2C%E6%B1%82CuA%E2%88%A9CuB%2CCuA%E2%88%A9B)
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1.设全集U=R,A=(x丨|x|>1),B=(x丨x-0.5≥0),求CuA∪CuB,CuA∩CuB 2.已知集合A=(x丨x^2+3x+2<0),B=(x丨x^2+2x=0),全集U=R,求CuA∩CuB,CuA∩B
1.设全集U=R,A=(x丨|x|>1),B=(x丨x-0.5≥0),求CuA∪CuB,CuA∩CuB
2.已知集合A=(x丨x^2+3x+2<0),B=(x丨x^2+2x=0),全集U=R,求CuA∩CuB,CuA∩B
1.设全集U=R,A=(x丨|x|>1),B=(x丨x-0.5≥0),求CuA∪CuB,CuA∩CuB 2.已知集合A=(x丨x^2+3x+2<0),B=(x丨x^2+2x=0),全集U=R,求CuA∩CuB,CuA∩B
1、
A
x1
所以CuA是-1
|x|>1
A={-1
CuA∪CuB={X≤0.5或X〉1}
CuA∩CuB={-1≤X≤3}
后面化成顶点式子求值域
没什么难的..你画个竖轴把方向和点都标好.就能做出来.