यदि $f(x) = \cos x$ जब $x = n\pi$ $(n = 0, 1, 2, 3, \dots)$ और अन्यथा $f(x) = 3$,तथा $\phi(x) = \begin{cases} x^2 + 1 & \text{जब } x \neq 3, x \neq 0 \\ 3 & \text{जब } x = 0 \\ 5 & \text{जब } x = 3 \end{cases}$ है,तो $\lim_{x \to 0} f(\phi(x))$ ज्ञात कीजिए।

  • A
    $1$
  • B
    $3$
  • C
    $5$
  • D
    इनमें से कोई नहीं

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