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If `a, b in (0, 2)` and the equation `(2x^2+5)/2 = x - 2cos(ax + b)` has at least one solution then

A

1

B

2

C

e

D

`pi`

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The correct Answer is:
D
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FIITJEE-QUADRATIC EQUATION & EXPRESSION -ASSIGNMENT PROBLEMS (OBJECTIVE) Level - I
  1. Consider the equation x^(3)-nx+1=0, n in N, n ge 3. Then

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  2. If sin alpha, sin beta and cos alpha are in GP, then roots of x^2 + 2x...

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  3. If a, b in (0, 2) and the equation (2x^2+5)/2 = x - 2cos(ax + b) has a...

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  4. Let P(x) and Q(x) be two polynomials. If f(x) = P(x^4) + xQ(x^4) is di...

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  5. If (y^2-5y+3)(x 62+x+1)<2x for all x in R , then fin the interval in ...

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  6. The solution of the equation |x+1|^(2)-2|x+2|-26=0 is

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  7. If minimum value of f(x)=(x^(2)+2bx+2c^(2)) is greater than the maximu...

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  8. The number of real solutions (x, y, z, t) of simultaneous equations 2y...

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  9. The set of values of a for which (a - 1) x^(2) - (a + 1) x + a - 1 ...

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  10. if for all real value of x,(4x^2+1)/(64x^2-96x.sina+5)<1/32,then a li...

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  11. The number of real solutions of the equation sin (e^x)= 5^x+5^-x

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  12. The equation (x-3)^9+(x-3^2)^9+(x-3^3)^9+.....+(x-3^9)^9=0 has

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  13. The set of all real numbers x for which x^2-|x+2| +x gt 0 is

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  14. The exhaustive set of values of a for which the equation a sin(x+(pi)/...

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  15. If the roots of the equation (a)/(x+a+k)+(b)/(x+b+k)=2 are equal in ma...

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  16. The set of all x in the interval [0, pi] for which 2 sin^(2)x-3 sin x ...

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  17. Let a gt 0, b gt 0 then both roots of the equation ax^(2)+bx+c=0

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  18. The number of positive integral solutions of x^4-y^4=3789108 is 0 b. 1...

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  19. The set of values for which x^(3)+1 ge x^(2)+x is

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  20. If a ,b ,c are distinct positive numbers, then the nature of roots of ...

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