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If a ,b ,a n dc are in G.P., then the eq...

If `a ,b ,a n dc` are in G.P., then the equations `a x^2+2b x+c=0a n ddx^2+2e x+f=0` have a common root if `d/c , e/b ,f/c` are in a. A.P. b. G.P. c. H.P. d. none of these

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CENGAGE ENGLISH-SEQUENCES AND SERIES-All Questions
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  2. If l n(a+c),l n(a-c) and l n(a-2b+c) are in A.P., then (a) a ,b ,c ...

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  3. If a ,b ,a n dc are in G.P., then the equations a x^2+2b x+c=0a n ddx^...

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