List questions from geometric-progressions

Published on 07 Jun 2016 - 12:50

43

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Geometric progression having the first and last values and the number of steps

Published on 18 Jun 2016 - 8:16

42

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Fast way of suming up polynoms

Published on 23 Jun 2016 - 15:34

9.1k

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Prove by induction $3+3 \cdot 5+ \cdots +3 \cdot 5^n = \frac{3(5^{n+1} -1)}{4}$

Published on 24 Jun 2016 - 13:47

4.4k

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Sides of the triangles are in G.P.

Published on 27 Jun 2016 - 3:22

133

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Inverse trigonometric question including geometric sequence

Published on 15 Apr 2013 - 10:50

71

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Calculating a sum of the series $\sum_{n=1}^{\infty} \frac1{2^{n-1}}$

Published on 06 May 2013 - 18:14

1.8k

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Sum of powers - how to solve $\sum_{r=1}^{10} 4^r$

Published on 28 Sep 2013 - 19:41

318

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Prove that $1+a+a^2+\cdots+a^n=(1-a^{n+1})/(1-a)$.

Published on 12 Nov 2013 - 6:16

3.2k

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Cauchy Sequence if $|s_{n+1} - s_n| < 2^{-n}$

Published on 19 Nov 2013 - 1:21

148

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How to solve for a limit of summation: $z = \sum_{i=0}^x ( 2^i ) + 90$

Published on 03 Dec 2013 - 10:44

3.5k

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Proving the geometric sum formula by induction

Published on 31 Jan 2014 - 22:40

109

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Help with Elementary number theory please

Published on 05 Feb 2014 - 22:26

1k

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Prove by Induction (Geometric Progression): $\sum_{i=0}^n q^i=\frac{q^{n+1}-1}{q-1}$

Published on 06 Mar 2014 - 6:43

105

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Why does $\dfrac{1}{1+x^2}=1-x^2+x^4-x^6+x^8\dots$?

Published on 10 Mar 2014 - 0:23

List Question

Solve the trigonometric series equation $1 + \sin x + \sin^2 x + \sin^3 x + \cdots = 4 + 2\sqrt 3$

Geometric progression having the first and last values and the number of steps

Fast way of suming up polynoms

Prove by induction $3+3 \cdot 5+ \cdots +3 \cdot 5^n = \frac{3(5^{n+1} -1)}{4}$

Sides of the triangles are in G.P.

Inverse trigonometric question including geometric sequence

Calculating a sum of the series $\sum_{n=1}^{\infty} \frac1{2^{n-1}}$

Sum of powers - how to solve $\sum_{r=1}^{10} 4^r$

Prove that $1+a+a^2+\cdots+a^n=(1-a^{n+1})/(1-a)$.

Cauchy Sequence if $|s_{n+1} - s_n| < 2^{-n}$

How to solve for a limit of summation: $z = \sum_{i=0}^x ( 2^i ) + 90$

Proving the geometric sum formula by induction

Help with Elementary number theory please

Prove by Induction (Geometric Progression): $\sum_{i=0}^n q^i=\frac{q^{n+1}-1}{q-1}$

Why does $\dfrac{1}{1+x^2}=1-x^2+x^4-x^6+x^8\dots$?

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