用适当的符号填空:(1)空集_{x|x^2-1=0} (2){1,2,3}_ N(3) {x|y=根号(2x-1)} _ {y|y=x^2-2x-1} (4)0_{x|x^2=2x}
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![用适当的符号填空:(1)空集_{x|x^2-1=0} (2){1,2,3}_ N(3) {x|y=根号(2x-1)} _ {y|y=x^2-2x-1} (4)0_{x|x^2=2x}](/uploads/image/z/11149161-33-1.jpg?t=%E7%94%A8%E9%80%82%E5%BD%93%E7%9A%84%E7%AC%A6%E5%8F%B7%E5%A1%AB%E7%A9%BA%EF%BC%9A%EF%BC%881%EF%BC%89%E7%A9%BA%E9%9B%86%EF%BC%BF%EF%BD%9Bx%7Cx%5E2-1%3D0%EF%BD%9D+%EF%BC%882%EF%BC%89%7B1%2C2%2C3%7D%EF%BC%BF+N%283%29+%7Bx%7Cy%3D%E6%A0%B9%E5%8F%B7%EF%BC%882x-1%EF%BC%89%7D+%EF%BC%BF+%7By%7Cy%3Dx%5E2-2x-1%7D+%284%290%EF%BC%BF%7Bx%7Cx%5E2%3D2x%7D)
用适当的符号填空:(1)空集_{x|x^2-1=0} (2){1,2,3}_ N(3) {x|y=根号(2x-1)} _ {y|y=x^2-2x-1} (4)0_{x|x^2=2x}
用适当的符号填空:(1)空集_{x|x^2-1=0} (2){1,2,3}_ N
(3) {x|y=根号(2x-1)} _ {y|y=x^2-2x-1} (4)0_{x|x^2=2x}
用适当的符号填空:(1)空集_{x|x^2-1=0} (2){1,2,3}_ N(3) {x|y=根号(2x-1)} _ {y|y=x^2-2x-1} (4)0_{x|x^2=2x}
因为不能输入相应的符号,所以就以一般汉语发音表示.
(1)、空集“包含于”x=+1/-1
(3)、x大于等于1/2“包含于”y大于等于-2
(2)、包含于
(4)、0”属于”x=0/2