MCQ
$\cot(\frac{\pi}{4}-2\cot^{-1}3)=$
- ✓$7$
- B$6$
- C$5$
- DNone of these.
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$\mathrm{g}^{\prime \prime}\left(\mathrm{N}+\frac{1}{2}\right)-\mathrm{g}^{\prime \prime}\left(\frac{1}{2}\right)=$