1.函数y=x(x+1)的增区间为( )A.(-1,0) B.(-∞,-1/2) C.(-1/2,+∞) D.(1/2,+∞)2.函数y=x²-x-2的减区间为( )A.(-1,2) B.(-1/2,+∞) C.(-∞,1/2) D.(1/2,+∞)3.下列各函数中,在(-∞,0)
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![1.函数y=x(x+1)的增区间为( )A.(-1,0) B.(-∞,-1/2) C.(-1/2,+∞) D.(1/2,+∞)2.函数y=x²-x-2的减区间为( )A.(-1,2) B.(-1/2,+∞) C.(-∞,1/2) D.(1/2,+∞)3.下列各函数中,在(-∞,0)](/uploads/image/z/2003751-63-1.jpg?t=1.%E5%87%BD%E6%95%B0y%3Dx%EF%BC%88x%2B1%EF%BC%89%E7%9A%84%E5%A2%9E%E5%8C%BA%E9%97%B4%E4%B8%BA%EF%BC%88+%EF%BC%89A.%EF%BC%88-1%2C0%EF%BC%89+B.%EF%BC%88-%E2%88%9E%2C-1%2F2%EF%BC%89+C.%EF%BC%88-1%2F2%2C%2B%E2%88%9E%EF%BC%89+D.%EF%BC%881%2F2%2C%2B%E2%88%9E%EF%BC%892.%E5%87%BD%E6%95%B0y%3Dx%26%23178%3B-x-2%E7%9A%84%E5%87%8F%E5%8C%BA%E9%97%B4%E4%B8%BA%EF%BC%88+%EF%BC%89A.%EF%BC%88-1%2C2%EF%BC%89+B.%EF%BC%88-1%2F2%2C%2B%E2%88%9E%EF%BC%89+C.%EF%BC%88-%E2%88%9E%2C1%2F2%EF%BC%89+D.%EF%BC%881%2F2%2C%2B%E2%88%9E%EF%BC%893.%E4%B8%8B%E5%88%97%E5%90%84%E5%87%BD%E6%95%B0%E4%B8%AD%2C%E5%9C%A8%EF%BC%88-%E2%88%9E%2C0%EF%BC%89)
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