If f(x) = x^(3) + bx^(2) + cx + d and 0 ...

If `f(x) = x^(3) + bx^(2) + cx + d and 0 lt b^(2) lt c`, then in `(-oo, oo)`, a)f(x) is a strictly increasing function b)f(x) has local maxima c)f(x) is a strictly decreasing function d)f(x) is bounded

A

f(x) is a strictly increasing function

B

f(x) has local maxima

C

f(x) is a strictly decreasing function

D

f(x) is bounded

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The correct Answer is:

A

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