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The condition that f(x) =ax^3+bx^2+cx+d ...

The condition that `f(x) =ax^3+bx^2+cx+d` has no extreme value is

A

`b^2=4ac`

B

`b^2=3ac`

C

`b^2lt 3ac`

D

`b^2gt 3ac`

Text Solution

Verified by Experts

The correct Answer is:
C
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