જો $f(a+b+1-x)=f(x)$ તમામ $x$ માટે હોય,જ્યાં $a$ અને $b$ નિશ્ચિત ધન વાસ્તવિક સંખ્યાઓ છે,તો $\frac{1}{a+b} \int_{a}^{b} x(f(x)+f(x+1)) dx$ ની કિંમત શું થાય?

  • A
    $\int_{a+1}^{b+1} f(x) dx$
  • B
    $\int_{a+1}^{b+1} f(x+1) dx$
  • C
    $\int_{a+1}^{b-1} f(x+1) dx$
  • D
    $\int_{a-1}^{b-1} f(x) dx$

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$\int_{-1}^{0} \frac{4x^2 + 4x + 3}{1 + e^{2x + 1}} dx = $

$\int_0^\pi \sin^2 x \cos^3 x \, dx = $ . . . . . . .

ધારો કે $I_n = \int_0^{\pi / 2} x^n \cos x \, dx$,જ્યાં $n$ એ અ-ઋણ પૂર્ણાંક છે. તો,$\sum_{n=2}^{\infty} \left( \frac{I_n}{n!} + \frac{I_{n-2}}{(n-2)!} \right)$ ની કિંમત શોધો.

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