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If x in R , the numbers 2^(1+x)+2^(1-x)...

If `x in R ,` the numbers `2^(1+x)+2^(1-x), b//2,36^x+36^(-x)` form an A.P., then `b` may lie in the interval `[12 ,oo)` b. `[6,oo)` c. `(-oo,6]` d. `[6, 12]`

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RESONANCE DPP-BOARD PAPER SOLUTIONS-All Questions
  1. The number of integral value(s) of x satisfying the equation |x^4 .3^...

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  2. The complete solution set of the inequation sqrt(x+18)<2-x , is (-18 ,...

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  3. If ln^2x+3ln x-4 is non negative, then x must lie in the interval: ...

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  4. If log2, log (2^x-1) and log(2^x+3) are in A.P., then x is equal to

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  5. The n^(t h) term of the sequence 5+55+555+... is 5xx10^(n-1) b. 5x...

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  6. If x^2+a x+10=0a n dx^2+b x-10=0 have common root, then a^2-b^2 i...

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  7. If the equation x^2=a x+b=0 has distinct real roots and x^2+a|x|+b=0 h...

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  8. Sum of an infinitely many terms of a G.P. is 3 times the sum of even ...

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  9. If A={3,4,6},B={1,3} andC={1,2,6} then find (A-B)xx(A-C).

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  10. Draw graph of y=|3x-5| b. y=|2x+1|

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  11. The set of all values of ' a ' for which the quadratic equation 3x^2+...

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  12. If sqrt(1+1/(1^2)+1/(2^2))+sqrt(1+1/(2^2)+1/(3^2))+sqrt(1+1/(3^2)+1/(4...

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  13. Solve the following |(x^2+2x+2)+(3x+7)|<|x^2+2x+2|+|3x+7|

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  14. If a ,b ,c are first three terms of a G.P. If the harmonic mean of a ...

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  15. Solve the equation: |x+1|-|x|+3|x-1|-2|x-2|=x+2

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  16. Solve the following |(x^2-1)+(x^2-4)|lt=3

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  17. Let y=1/(2+1/(1+1/(2+1/(1+1/( ))))) , then the value of y is a.(...

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  18. For the series, S=1+1/((1+3))(1+2)^2+1/((1+3+5))(1+2+3)^2+1/((1+3+5+7)...

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  19. If x in R , the numbers 2^(1+x)+2^(1-x), b//2,36^x+36^(-x) form an A....

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  20. Draw graph of the following expression. Also find extremum value if it...

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