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If a ,b ,c ,d in R^+-{1}, then the min...

If `a ,b ,c ,d in R^+-{1},` then the minimum value of `(log)_d a+(log)_b d+(log)_a c+(log)_c b` is (a)`4` (b)`2` (c)`1` (d)none of these``

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CENGAGE ENGLISH-SEQUENCES AND SERIES-All Questions
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  2. If a ,b ,c are the sides of a triangle, then the minimum value of a/(...

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  3. If a ,b ,c ,d in R^+-{1}, then the minimum value of (log)d a+(log)b ...

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  4. If a ,b ,c in R^+, t h e n(b c)/(b+c)+(a c)/(a+c)+(a b)/(a+b) is alw...

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

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  7. Let a,b ,c be positive integers such that b/a is an integer. If a,b,c ...

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  8. Suppose that all the terms of an arithmetic progression (A.P.) are nat...

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  9. If the sides of a right-angled triangle are in A.P., then the sines of...

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  10. The sum of an infinite geometric series is 162 and the sum of its firs...

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  11. If a ,b ,c are digits, then the rational number represented by odotc a...

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  12. If a = underset(55 "times")underbrace(111.....1), b= 1+10+10^(2)+10^(3...

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  13. Consider the ten numbers a r ,a r^2, a r^3, ..... ,a r^(10)dot If the...

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  14. The sum of 20 terms of a series of which every even term is 2 times ...

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  15. Let an be the nth term of a G.P. of positive numbers. Let sum(n=1)^(10...

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  17. In a G.P. the first, third, and fifth terms may be considered as the ...

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  18. If a,b,c,d be in G.P. show that (b-c)^2+(c-a)^2+(d-b)^2=(a-d)^2.

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  19. If the pth, qth, rth, and sth terms of an A.P. are in G.P., then p-q ,...

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