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If xgt 0, then f(x) =x^3+3x is...

If `xgt 0`, then `f(x) =x^3+3x` is

A

decreasing

B

increasing

C

oscillating

D

none

Text Solution

Verified by Experts

The correct Answer is:
B
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A : The function f(x) =2x^3-3x^2-12x+8 has minimum value R: For the above function f^'(2)=0 and f^' ' (2) gt 0