જો $\int \limits_0^1 \frac{1}{\left(5+2 x -2 x ^2\right)\left(1+ e ^{(2-4 x)}\right)} dx =\frac{1}{\alpha} \log _{ e }\left(\frac{\alpha+1}{\beta}\right)$ જ્યાં $\alpha, \beta > 0$,તો $\alpha^4-\beta^4$ ની કિંમત શોધો:

  • A
    $21$
  • B
    $0$
  • C
    $19$
  • D
    $-21$

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નિશ્ચિત સંકલન $\int_{-3}^{1} (2(t+1)^5 - 5(t+1)^3 + t + 3) dt$ ની કિંમત શોધો.

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