1.y=√(3x^2-8),求dy/dx2.y=9-x^2,x=1/2,求导数dy/dx3.y=(x+1)(x-2),x=1/2,_英语解答

1.y=√(3x^2-8),求dy/dx
2.y=9-x^2,x=1/2,求导数dy/dx
3.y=(x+1)(x-2),x=1/2,求导数dy/dx
用公式△y/△x=f(x+△x)-f(x)求

人气：277 ℃　时间：2020-03-26 13:18:08

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