If \( f(x)=x^{3}+b x^{2}+c x+d \) and \( 0b^{2}c \), then in
\( (-\infty, \infty) \) [One Correc... VIDEO
If \( f(x)=x^{3}+b x^{2}+c x+d \) and \( 0b^{2}c \), then in
\( (-\infty, \infty) \) [One Correct Option, 2004]
(a) \( f(x) \) is strictly increasing function
(b) \( f(x) \) has a local maxima
(c) \( f(x) \) is strictly decreasing function
(d) \( f(x) \) is bounded
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