$\mathop {\lim }\limits_{n \to \infty } \frac{1}{{{n^2}}}\left[ {1\cos \frac{1}{{{n^2}}} + 2\cos \frac{4}{{{n^2}}} + 3\cos \frac{9}{{{n^2}}} + .... + 2n\cos 4} \right]$ ની કિંમત શોધો.

  • A
    $\frac{{\sin 1}}{2}$
  • B
    $\frac{{\sin 2}}{2}$
  • C
    $\frac{{\sin 3}}{2}$
  • D
    $\frac{{\sin 4}}{2}$

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Similar Questions

સરવાળાની મર્યાદા તરીકે $\int_{0}^{2} e^{x} d x$ ની કિંમત શોધો.

$n$ ની પૂરતી મોટી કિંમત માટે,પ્રથમ $n$ ધન પૂર્ણાંકોના વર્ગમૂળનો સરવાળો,એટલે કે $\sqrt{1} + \sqrt{2} + \sqrt{3} + \dots + \sqrt{n}$,આશરે કોના બરાબર થાય?

$\mathop {\lim }\limits_{n \to \infty } {\left( {\frac{{\left( {n + 1} \right)\left( {n + 2} \right) \ldots \left( {3n} \right)}}{{{n^{2n}}}}} \right)^{\frac{1}{n}}} = $

$\lim _{n \rightarrow \infty}\left[\frac{\sqrt{n^2-1^2}}{n^2}+\frac{\sqrt{n^2-2^2}}{n^2}+\frac{\sqrt{n^2-3^2}}{n^2}+\ldots+\frac{\sqrt{n^2-n^2}}{n^2}\right]=$

$\int_0^3 (2+x^2) dx = $

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