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Let f (x) = x^3-6x^2 +9x +18, then f(x) ...

Let f (x) = `x^3`-6`x^2` +9x +18, then f(x) is strictly decreasing in- A) (-`infty`,1) B) (3, `infty`) C) (-`infty`,1]U[3,`infty`) D) (1, 3)

A

(-`inf`,1)

B

(3, `inf`)

C

(-`inf`,1]U[3,`inf`)

D

(1, 3)

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CHETANA PUBLICATION-Applications of Derivatives-Exercise
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