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Important Concepts and Formulas - Sequence and Series

 



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macoi
2015-06-18 12:35:06 
mathematically speaking, the next term cannot be determined by giving only the first finite number of terms of a general sequence. explain this fact by giving examples
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sani
2015-05-11 10:59:13 
I hate sequence and series but after watching these formulas arrange in such an efficient manner i now i feel relaxed now i am not soooooooo much confuse so thanks.
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pardeep
2015-03-29 09:09:19 
354 180 64 21 10.2 ?
Please complete this series
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Dev
2015-04-06 20:23:11 
354/2 + 3 =  180
180/3 + 4 = 64
64/4 + 5 = 21
21/5 + 6 = 10.2
10.2/6 + 7 = 8.7
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Ankita
2015-03-25 05:49:29 
What is the formula to find relation between ap hp
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Apurv
2015-08-22 06:46:57 
no formula

If a, b, c are in AP, 2b = a + c

Suppose a,b,c are in H.P. As reciprocals of A.P. are the terms in H.P,

@@\dfrac{2}{b}=\dfrac{1}{a}+\dfrac{1}{c}\\
\Rightarrow \dfrac{2}{b}=\dfrac{a+c}{ac}\\
\Rightarrow \dfrac{b}{2}=\dfrac{ac}{a+c}\\
\Rightarrow b=\dfrac{2ac}{a+c}@@
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vishal
2014-12-17 16:55:18 
Divide 20 into 4 parts which are in A.P. and such that the product of first and fourth is to product of the second and third in ratio 2:3

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patlolla
2015-04-02 05:11:01 
2+4+6+8=20
1st x 4th=2nd x 3rd
16=24
2:3
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Jay
2014-12-20 20:45:30 
2,4,6,8  or 8,6,4,2

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Tanika monga
2014-12-08 11:56:06 
If (m+n) & (m-n) are in gp & respectively p & q then find the value of m :
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