$\frac{x^2 - y^2}{1!} + \frac{x^4 - y^4}{2!} + \frac{x^6 - y^6}{3!} + \dots \infty = $

  • A
    $e^x - e^y$
  • B
    $e^{x^2} - e^{y^2}$
  • C
    $2 + e^{x^2} - e^{y^2}$
  • D
    $\frac{e^x - e^y}{2}$

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શ્રેણી $C = 1 + \frac{\cos x}{1!} + \frac{\cos 2x}{2!} + \frac{\cos 3x}{3!} + \dots$ અને $S = \frac{\sin x}{1!} + \frac{\sin 2x}{2!} + \frac{\sin 3x}{3!} + \dots$ નો સરવાળો કેટલો થાય?

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