1.下列函数中,在区间(0,2)上为增函数的是( )A.y=-3x+2 B.y=3/x C.y=x^2-4x+5 D.y=3x^2+8x-102.函数y=根号下-x^2-2x+3的增区间是( )A.【-3,-1】B【-1,1】C(负无穷大,-3】D【-1,正无穷大)3.f(x)=x^2+2(a-1)x+2在
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![1.下列函数中,在区间(0,2)上为增函数的是( )A.y=-3x+2 B.y=3/x C.y=x^2-4x+5 D.y=3x^2+8x-102.函数y=根号下-x^2-2x+3的增区间是( )A.【-3,-1】B【-1,1】C(负无穷大,-3】D【-1,正无穷大)3.f(x)=x^2+2(a-1)x+2在](/uploads/image/z/14529747-3-7.jpg?t=1.%E4%B8%8B%E5%88%97%E5%87%BD%E6%95%B0%E4%B8%AD%2C%E5%9C%A8%E5%8C%BA%E9%97%B4%EF%BC%880%2C2%EF%BC%89%E4%B8%8A%E4%B8%BA%E5%A2%9E%E5%87%BD%E6%95%B0%E7%9A%84%E6%98%AF%EF%BC%88+%EF%BC%89A.y%3D-3x%2B2+B.y%3D3%2Fx+C.y%3Dx%5E2-4x%2B5+D.y%3D3x%5E2%2B8x-102.%E5%87%BD%E6%95%B0y%3D%E6%A0%B9%E5%8F%B7%E4%B8%8B-x%5E2-2x%2B3%E7%9A%84%E5%A2%9E%E5%8C%BA%E9%97%B4%E6%98%AF%EF%BC%88+%EF%BC%89A.%E3%80%90-3%2C-1%E3%80%91B%E3%80%90-1%2C1%E3%80%91C%EF%BC%88%E8%B4%9F%E6%97%A0%E7%A9%B7%E5%A4%A7%2C-3%E3%80%91D%E3%80%90-1%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%E5%A4%A7%EF%BC%893.f%28x%29%3Dx%5E2%2B2%28a-1%29x%2B2%E5%9C%A8)
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