જો $f(x) = \left|\begin{array}{ccc} x^3 & 2x^2+1 & 1+3x \\ 3x^2+2 & 2x & x^3+6 \\ x^3-x & 4 & x^2-2 \end{array}\right|$ તમામ $x \in R$ માટે હોય,તો $2f(0) + f'(0)$ ની કિંમત શોધો.

  • A
    $48$
  • B
    $24$
  • C
    $42$
  • D
    $18$

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જો $f(x) = \left| \begin{array}{ccc} \sin x & \cos x & \tan x \\ x^3 & x^2 & x \\ 2x & 1 & x \end{array} \right|$ હોય,તો $\lim_{x \to 0} \frac{f(x)}{x^2}$ ની કિંમત શોધો.

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