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If the equation (a^(2)+b^(2))x^(2)-2(ac+...

If the equation `(a^(2)+b^(2))x^(2)-2(ac+ba)x+(c^(2)+d^(2))=0` has equal roots, then which one of the following is correct?

A

They are in AP

B

They are in GP

C

They are in HP

D

The are neither in AP, nor in GP, nor in HP

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The correct Answer is:
B
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PUNEET DOGRA-SEQUENCE AND SERIES-PREVIOUS YEAR QUESTIONS
  1. If the equation (a^(2)+b^(2))x^(2)-2(ac+ba)x+(c^(2)+d^(2))=0 has equal...

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  2. Let a,b,c be in AP and k ne 0 be a real number. Which of following cor...

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  3. How many two digit numbers are divisible by 4 ? (a)21 (b)22 (c)24 ...

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  4. Let s(n) be the sum of the first n terms of an AP. If S(2n)=3n+14n^(2)...

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  5. How many two digit numbers are divisible by 4 ? (a)21 (b)22 (c)24 ...

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  6. What is the value of 1-2+3-4+5- . . . .+101 ?

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  7. If the sum of first n terms of a series in (n+12). Then what is its th...

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  8. A geometric progression (GP) consists of 200 terms. If the sum of odd ...

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  9. Let m and n (m<n) be the roots of the equation x^(2)-16x+39=0. If four...

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  10. What is n^(th) term of the sequence 25,-125,625,-3125, . . .?

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  11. The number 1,5 and 25 can be three terms (not necessarily consecutive)...

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  12. The sum of (p+q)^(th) and (p-q)^(th) terms of an AP equal to

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  13. If a,b,c are in AP or GP or HP. Then (a-b)/(b-c) is equal to:

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  14. If the second term of GP is 2 and the sum of its infinite terms is 8, ...

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  15. Let T, be the rth term of an A.P. for r = 1, 2, 3 … if the some positi...

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  16. The sum of the series 3-1+(1)/(3)-(1)/(9)+ . . . .oo Is equal to: (a...

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  17. If an infinite GP has the first term x and the sum 5, then which one o...

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  18. The third term of a GP is 3. what is the product of the first 5 terms ...

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  19. What is the sum of all two digit numbers which when divided by 3 leave...

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  20. If x, 3/2, z are in AP, x, 3, z are in GP, then which of the following...

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  21. If x=1-y+y^(2)-y^(3)+ up to infinite terms where |y| lt1, then which o...

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