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If a ,b ,ca n dd are in H.P., then prove...

If `a ,b ,ca n dd` are in H.P., then prove that `(b+c+d)//a ,(c+d+a)//b ,(d+a+b)//c` and `(a+b+c)//d` , are in A.P.

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  2. Find the sum 3/2-5/6+7/(18)-9/(54)+...oodot

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  3. If a ,b ,ca n dd are in H.P., then prove that (b+c+d)//a ,(c+d+a)//b ,...

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  6. The pth term of an A.P. is a and qth term is bdot Then find the sum o...

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  18. Find the sum sum(r=1)^n r/((r+1)!) where n!=1xx2xx3....n.

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