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If a ,b ,c ,d in R^+and a ,b ,c,d are ...

If `a ,b ,c ,d in R^+`and `a ,b ,c,d` are in H.P., then (a)`a+d > b+c` (b)`a+b > c+d` (c)`a+c > b+d` (d)none of these``

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  2. If a ,b ,c in R^+ , then the minimum value of a(b^2+c^2)+b(c^2+a^2)+...

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  3. If a ,b ,c ,d in R^+and a ,b ,c,d are in H.P., then (a)a+d > b+c (...

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  6. If positive numbers a ,b ,c are in H.P., then equation x^2-k x+2b^(10...

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  11. If a ,b ,c in R^+t h e n(a+b+c)(1/a+1/b+1/c) is always (a)geq12 (b...

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  12. The first term of an arithmetic progression is 1 and the sum of the fi...

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