The curve \( y=f(x) \) which satisfies the condition \( f(x)0 \) and \( f^{\prime \prime}(x)0 \)... VIDEO
The curve \( y=f(x) \) which satisfies the condition \( f(x)0 \) and \( f^{\prime \prime}(x)0 \) for all real \( x \), is
(a)
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