$\frac{1 - 2x + 3x^2}{e^x}$ ના વિસ્તરણમાં,$x^5$ નો સહગુણક શું હશે?

  • A
    $\frac{71}{120}$
  • B
    $-\frac{71}{120}$
  • C
    $\frac{31}{40}$
  • D
    $-\frac{31}{40}$

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Similar Questions

$1 - \log 2 + \frac{(\log 2)^2}{2!} - \frac{(\log 2)^3}{3!} + \dots$ ની કિંમત શોધો.

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?

$1 + \frac{2^2}{1!} + \frac{3^2}{2!} + \frac{4^2}{3!} + \dots \infty = $ ($e$ માં)

$\frac{1}{2} + \frac{1}{4} + \frac{1}{8 \times 2!} + \frac{1}{16 \times 3!} + \frac{1}{32 \times 4!} + \dots \infty = $

જો $2 \sinh x = \cosh x$ હોય,તો $x =$

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