ધારો કે $S$ એ તમામ $(\alpha, \beta) \in \mathbb{R} \times \mathbb{R}$ નો ગણ છે કે જેથી $\lim _{x \rightarrow \infty} \frac{\sin(x^2)(\log_e x)^\alpha \sin(1/x^2)}{x^{\alpha \beta}(\log_e(1+x))^\beta} = 0$ થાય. તો નીચેનામાંથી કયું (કયા) સાચું છે?

  • A
    $(-1, 3) \in S$
  • B
    $(-1, 1) \in S$
  • C
    $(1, -1) \in S$
  • D
    $(1, -2) \in S$

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Difficult
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$\mathop {\lim }\limits_{x \to 0} f(x)$ અને $\mathop {\lim }\limits_{x \to 1} f(x)$ શોધો,જ્યાં $f(x) = \begin{cases} 2x+3, & x \leq 0 \\ 3(x+1), & x > 0 \end{cases}$

$\lim _{x}$ ${\rightarrow 0} \frac{8}{x^8}\left[1-\cos \left(\frac{x^2}{2}\right)-\cos \left(\frac{x^2}{4}\right)+\cos \left(\frac{x^2}{2}\right) \cdot \cos \left(\frac{x^2}{4}\right)\right]$ ની કિંમત શોધો.

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