The function \( f(x)=x^{9}+3 x^{7}+64 \) is increasing on (a) \( R \) (b) \( (-\infty, 0) \) (c)...

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The function \( f(x)=x^{9}+3 x^{7}+64 \) is increasing on
(a) \( R \)
(b) \( (-\infty, 0) \)
(c) \( (0, \infty) \)
(d) \( R_{0} \)
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