设函数f(x)=|2x-1|-|x+2|求不等式f(x)大于等于3的解集,
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![设函数f(x)=|2x-1|-|x+2|求不等式f(x)大于等于3的解集,](/uploads/image/z/5220765-45-5.jpg?t=%E8%AE%BE%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3D%EF%BD%9C2x-1%EF%BD%9C-%EF%BD%9Cx%2B2%EF%BD%9C%E6%B1%82%E4%B8%8D%E7%AD%89%E5%BC%8Ff%EF%BC%88x%EF%BC%89%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E3%E7%9A%84%E8%A7%A3%E9%9B%86%2C)
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设函数f(x)=|2x-1|-|x+2|求不等式f(x)大于等于3的解集,
设函数f(x)=|2x-1|-|x+2|求不等式f(x)大于等于3的解集,
设函数f(x)=|2x-1|-|x+2|求不等式f(x)大于等于3的解集,
x>=1/2时,f(x)=2x-1-x-2=x-3>=3,得:x>=6;
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