sum of series

cgchayan

what will be the sum of this series?
[tex]\Sigma[/tex] ⁿC_r . 2^r
where r = 0 to n

l'Hôpital

Hint:
[tex]
\sum_{r=0}^n _nC_r \cdot 2^r = \sum_{r=0}^n _nC_r \cdot 2^r \cdot 1^{n-r}
[/tex]

cgchayan

thanx

Sherard

thanks for sharing information....

Similar Threads for: sum of series
Thread	Forum	Replies
Can anyone explain this regarding to fourier series and bessel series expansion?	Differential Equations	5
Convergence/Divergence of Given Series Using Alternating Series test.	Calculus & Beyond Homework	2
Complex power series to calculate Fourier series	Calculus & Beyond Homework	1
Divergent Harmonic Series, Convergent P-Series (Cauchy sequences)	Calculus & Beyond Homework	1
Calculating the wavelength for series limit for the Paschen series	Introductory Physics Homework	6

cgchayan	sum of series Tweet what will be the sum of this series? [tex]\Sigma[/tex] ⁿC_r . 2^r where r = 0 to n

l'Hôpital	Hint: [tex] \sum_{r=0}^n _nC_r \cdot 2^r = \sum_{r=0}^n _nC_r \cdot 2^r \cdot 1^{n-r} [/tex]

Sherard	sum of series thanks for sharing information....