Question
Let $f(x)=x^{3}-3(7-a) x^{2}-3\left(9-a^{2}\right) x+2$The values of a if $f(x)$ has points of extrema which are of opposite signs, are(A) $\bar{\phi}$(B) $(-3,3)$(C) $\left(-\infty, \frac{58}{14}\right)$(D) None of these
Step 1
Step 1: The derivative of the function $f(x)$ is given by $f'(x) = 3x^{2}-6(7-a)x-3(9-a^{2})$. Show more…
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The Maxima and Minima
Level II
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