MCQ
For any two matrices $A$ and $B$, we have
- A$A B=B A$
- B$A B \neq B A$
- C$A B=O$
- ✓None of these
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Where $[x]$ denotes greatest integer function.
$\left((x+2) e^{\left(\frac{y+1}{x+2}\right)}+(y+1)\right) d x=(x+2) d y, y(1)=1$
If the domain of $y=y(x)$ is an open interval $(\alpha, \beta)$, then $|\alpha+\beta|$ is equal to $......$