A) 9
B) \[\frac{1}{3}\]
C) 13
D) \[\frac{1}{\sqrt{13}}\]
Correct Answer: D
Solution :
(d): Write \[\frac{x}{{{x}^{2}}+1}=\frac{1}{\frac{{{x}^{2}}+1}{x}}=\frac{1}{x+\frac{1}{x}}\] and use logic as in Q14 OR Q15 OR Q16.You need to login to perform this action.
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