MCQOPTIONS
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| 1. |
\[\frac{d}{dx}{{\left( \sqrt{x}+\frac{1}{\sqrt{x}} \right)}^{2}}=\] [AI CBSE 1980] |
| A. | \[1-\frac{1}{{{x}^{2}}}\] |
| B. | \[1+\frac{1}{{{x}^{2}}}\] |
| C. | \[1-\frac{1}{2x}\] |
| D. | None of these |
| Answer» B. \[1+\frac{1}{{{x}^{2}}}\] | |