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[" 10.If "f(x)=kx^(3)-9x^(2)+9x+3" is mo...

[" 10.If "f(x)=kx^(3)-9x^(2)+9x+3" is monotonically increasing in "R," then "],[" (a) "k<3" (b) "k<=2" (c) "k>=3(" d) None of these "]

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