$\int_1^3 \sqrt{3 + x^3} \,dx$ નું મૂલ્ય કયા અંતરાલમાં આવેલું છે?

  • A
    $(1, 3)$
  • B
    $(2, 30)$
  • C
    $(4, 2\sqrt{30})$
  • D
    આમાંથી કોઈ નહીં

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$\int_0^{\pi} x f(\sin x) \, dx$ ની કિંમત શોધો.

$\int_{-\pi / 2}^{\pi / 2} \frac{\cos x}{1+e^{x}} d x$ ની કિંમત શોધો.

$\int_{-1}^1 (a x^3 + b x) dx = 0$ માટે

જો $\int_0^\pi {x\,f({{\cos }^2}x + {{\tan }^4}x)\,dx} = k\int_0^{\pi /2} {f({{\cos }^2}x + {{\tan }^4}x)\,dx,}$ હોય,તો $k$ ની કિંમત શોધો.

Difficult
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સાબિત કરો કે $\int_{0}^{a} f(x) g(x) \, dx = 2 \int_{0}^{a} f(x) \, dx$,જો $f(x) = f(a-x)$ અને $g(x) + g(a-x) = 4$ હોય.

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