$\underset{x \rightarrow \infty}{lim}xsin\left(\frac{2}{x}\right)=?$

এর সঠিক মান কোনটি?

The values of $\displaystyle\lim_{n\rightarrow \infty}\dfrac{\sqrt[4]{n^5+2}-\sqrt[3]{n^2+1}}{\sqrt[5]{n^4+2}-\sqrt[2]{n^3+1}}$ is?

If $\displaystyle f(x) = \sqrt {\frac{{x - \sin x}}{{x + {{\cos }^2}x}}}$ then $\mathop {\lim }\limits_{x \to \infty } f(x)$ ; is

  $\lim_{x \to ∞} \frac{2 x^{2} + 3 x + 5}{\left ( 3 x^{2} + 5 x - 5 \right.}$ এর মান-