$|x| < 1$ হলে $1 + x + x^{2} + x^{3} . . . . . . . . . . .$ ধারাটির যোগফল কোনটি?

Created: 3 months ago | Updated: 1 month ago

\frac{1}{1 + x}

{(1 + x)}^{2}

\frac{1}{{(1 - x)}^{2}}

\frac{1}{(1 - x)}

260

${\int_{0}}^{1} e^{- X^{2}} d x = ?$

Created: 9 months ago | Updated: 1 month ago

\sum_{k = 0}^{\infty} \frac{(- 1)^{k} x^{2 k}}{2^{2 k} (k!)^{2}}

\sum_{k = 0}^{\infty} \frac{(- 1)^{k}}{(2 k + 1) k!}

\sum_{k = 0}^{\infty} \frac{(- 1)^{k} \ln x}{\sqrt{k} k!}

\sum_{k = 0}^{\infty} \frac{(- 1)^{k + 1} x^{k}}{k!}

\sum_{k = 0}^{\infty} \frac{(- 1)^{k} x^{- \frac{1}{2}}}{2 \ln k}

231

Created: 9 months ago | Updated: 1 month ago

3 x + 5 y = 3

7 x - 7 y = 1

3 x + 11 y = 11

7 x + 11 y = 23

7 x - 15 y = 29

236

Created: 4 months ago | Updated: 1 month ago

π a^{2}

π a b

\frac{π}{4} a b s

a b

None

290

Created: 9 months ago | Updated: 1 month ago

16 x^{2} + 25 Y^{2} = 400

9 x^{2} + 25 y^{2} = 225

25 x^{2} + 9 y^{2} = 225

25 x^{2} + 16 y^{2} = 400

9 x^{2} + 16 y^{2} = 144

বিঃদ্রঃ-(নিজে চেষ্টা করুন সঠিক উত্তরটি জানা নেই)

264

Created: 9 months ago | Updated: 1 month ago

\bar{A} \times (\bar{B} \times \overset{⇀}{C)}

\bar{A} . (\bar{B} \times \overset{⇀}{C)}

\bar{A} . (\bar{B} \overset{⇀}{C)}

\bar{A} + (\bar{B} \times \overset{⇀}{C)}

\bar{A} . \bar{B} + \bar{B} . \overset{⇀}{C}

220