જો $\phi(t)=\begin{cases} 1, & 0 \leq t < 1 \text{ માટે} \\ 0, & \text{અન્યથા} \end{cases}$ હોય, તો $\int_{-3000}^{3000} \left( \sum_{r'=2014}^{2016} \phi(t-r') \phi(t-2016) \right) dt$ ની કિંમત શું થાય?

  • A
    એક વાસ્તવિક સંખ્યા
  • B
    $1$
  • C
    $0$
  • D
    અસ્તિત્વ ધરાવતું નથી

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નિશ્ચિત સંકલન $\int_{0}^{\frac{\pi}{4}} \tan x \,dx$ ની કિંમત શોધો.

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