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Solve cosx+cos3x-2cos2x=0...

Solve `cosx+cos3x-2cos2x=0`

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RESONANCE ENGLISH-DPP-QUESTION
  1. Find maximum and minimum values of 2sin(theta+(pi)/(6))+sqrt(3)cos(the...

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  2. Solve (tan3x-tan2x)/(1+tan3xtan2x ')=1

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  3. Solve cosx+cos3x-2cos2x=0

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  4. Find the solution of the equation [x] + {-x} = 2x, (where [*] and {*} ...

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  5. If tan alpha, tan beta, tangamma are the roots of the equation, x^3- ...

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  6. Value of (4\ sin 9^@ sin 21^@ sin 39^@ sin 51^@ sin 69^@ sin 81^@)/(si...

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  7. The graph of y = f(x) is given below then the graph y = |f(|x|)| ...

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  8. If a,b,c are distinct positive numbers in H.P. then which of the relat...

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  9. If the sum of the first 100 terms of an AP is -1 and the sum of even t...

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  10. If the solution of the equation |(x^4-9) -(x^2 + 3)| = |x^4 - 9| - |x^...

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  11. Let T(n) denotes the n ^(th) term of a G.P. with common ratio 2 and (l...

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  12. Draw the labled graph of following (i) y = |7-2x| , (ii) y = |x-1|-|3...

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  13. Which one of the following inequality holds good:

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  14. If x cos alpha+cos beta-cos(alpha+beta) and y=4 sin.(alpha)/(2)sin.(be...

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  15. Find the sum of the series 1+2(1-x)+3(1-x)(1-2x)+….+n(1-x)(1-2x)(1-3x)...

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  16. If a,b respectively be the number of solutions and sum of solutions of...

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  17. The equation |x + 2| - |x + 1| + |x -1| =K,x in R has two solutions i...

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  18. The "sum" of integral solutions of equations |sin^(2)x+17-x^(2)|=|16-x...

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  19. solution set of the inequality sqrt(7-x) > 2x-3 , is contained by the ...

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  20. a ,b ,c are positive real numbers forming a G.P. If ax^2+2b x+c=0 and ...

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