જો $y=(x-1)(x+2)(x^2+5)(x^4+8)$ હોય,તો $\lim _{x \rightarrow-1}(\frac{d y}{d x})=$

  • A
    -$30$
  • B
    $30$
  • C
    $52$
  • D
    -$52$

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જો $0 < x < \frac{\pi}{2}$ માટે $f(x) = \frac{1+\sec x}{2(\sec x-1)}$ અને $f^{\prime}(x) = f(x) \cdot g(x)$ હોય,તો $g(x) =$

ધારો કે વિધેય $f(x+y)=f(x)f(y)$ સમીકરણનું પાલન કરે છે,જ્યાં $x, y \in \mathbb{R}$ અને $f(0) \neq 0$. જો $f(5)=3$ અને $f^{\prime}(0)=2$ હોય,તો $f^{\prime}(5)$ ની કિંમત શોધો.

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