MCQ
Primitive of $(x^2 + 4)^{-1/2}$ $w.r.t$ $x^2 + 2$ is equal to :-
- A$\frac{2}{{\sqrt {{x^2} + 4} }} + C$
- B$\sqrt {{x^2} + 4} +\frac{1}{{\sqrt {{x^2} + 4} }} + C$
- ✓$2\sqrt {{x^2} + 4} + C$
- DNone
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$a_{i j}= 1 , \quad\quad\text { if } i=j$
$\quad\quad-x ,\quad \text { if }|i-j|=1$
$\quad\quad2 x+1, \text { otherwise }$
Let a function f: $\mathrm{R} \rightarrow \mathrm{R}$ be defined as $\mathrm{f}(\mathrm{x})=\operatorname{det}(\mathrm{A})$. Then the sum of maximum and minimum values of $f$ on $R$ is equal to: