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If cos(x-y),cosx and "cos"(x+y) are in H...

If `cos(x-y),cosx and "cos"(x+y)` are in H.P., then `cosxsec(y/2) is`

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
  1. The term independent of a in the expansion of (1+sqrt(a)+1/(sqrt(a)-1)...

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  2. Let P be the point (3, 2). Let Q be the reflection of P about the x-ax...

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  3. If cos(x-y),cosx and "cos"(x+y) are in H.P., then cosxsec(y/2) is

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  4. If A is a diagonal matrix of non-positive entries and order 3 such tha...

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  5. Suppose that vec p,vecqand vecr are three non- coplaner in R^(3) ,Let...

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  6. Let vec V1=3a x^2 hat i-2(x-1) hat j and vec V2=b(x-1) hat i+x^2 hat...

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  7. The sum 3/(1!+2!+3!)+4/(2!+3!+4!)+....+(2016)/(2014 !+2015 !+2016 !) i...

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  8. If f'(3)=2 , then lim(h->0)(f(3+h^2)-f(3-h^2))/(2h^2) is

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  9. If A, G & H are respectively the A.M., G.M. & H.M. of three positive n...

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  10. If points (p-2,p-4),(p ,p+1)a n d(p+4,16) are collinear then p=? a...

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  11. The sum of the coefficients of the polynomial obtained by collection o...

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  12. The mean of the n observation x1, x2, x3, ,xn be x dot Then the mea...

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  13. If a (1), i=1,2,3,4 be four real members of the same sign, then the mi...

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  14. If the parabola y=a x^2+b x+c ,w h e r ea , b , c in {1,2,3,4,5,6} pas...

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  15. Value of (1+1/3)(1+1/(3^2))(1+1/(3^4))(1+1/(3^8))oo is equal to 3 b. 6...

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

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  17. The remainder, when (15^23+23^23) is divided by 19, is

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  18. The value of 'lambda' so that the system of equations x+2y+3=0 3x...

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  19. The value of sum(r=0)^(20)r(20-r)(^(20)Cr)^2 is equal to 400^(39)C(20)...

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  20. Consider the following statements. p : Hari is clever. q: shyam is foo...

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