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(sin x + cos x)^(2) + cos^(2)((pi)/(4) +...

`(sin x + cos x)^(2) + cos^(2)((pi)/(4) + x) in`

A

[0, 1]

B

[0, 2]

C

[1, 2]

D

[0,3]

Text Solution

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The correct Answer is:
C
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Find the extreme values of the following function over R. (i) sin^(2) (60^(0) + x) + sin^(2) (60^(0) - x) (ii) cos (x+ (Pi)/(3) ) + 2sqrt(2) sin (x+ (pi)/(3))-3 (iii) 3 sin^(2) x+ 5 cos^(2) x (iv) cos 2 x+ cos^(2) x (v ) cos x cos ((2pi)/(3) + x) cos ((2pi)/(3)-x)

AAKASH SERIES-PERIODICITY AND EXTREME VALUES-Practice Sheet (Exericise-I) Level-II (Straight Objective Type Questions)
  1. Find the extreme values of the following function over R. (i)...

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  2. The extreme values of 4cos(x^(2)).cos((pi)/(3)+x^(2)).cos((pi)/(3)-x^...

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  3. (sin x + cos x)^(2) + cos^(2)((pi)/(4) + x) in

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  4. For all values of theta, the values of 3-cos theta+cos (theta+(pi)/(3)...

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  5. 5 cos theta + 3 cos ( theta - (pi)/(3) )+8 in

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  6. A+B = 90^(@) rArr cos A cos B in

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  7. A+B = 90^(@) rArr sin A + sin Bin

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  8. The range of cos^(2) x + sin^(4) x is

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  9. The range of f(x)=-3 cos sqrt(3x+x+x^(2)) is

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  10. The minimum and maximum values of 8 cos 3x - 15 sin3x are

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  11. The maximum value of (3 ) /( 5 sin x-12 cos x+19) is

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  12. cos5x=16 cos^(5) x -20 cos^(3) x +5 cos x in

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  13. 3 sin^(2) x -4 cos^(2) x in

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  14. The maximum value of cos x ((cos x )/( 1- sin x) + (1- sin x)/( cos x)...

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  15. Minimum value of 9 sec^(2) theta + 4 cosec^(2) theta + 7 is

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  16. The minimum value of the expression sin alpha + sin beta+sin lambda, w...

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  17. If a le 3 cos x + 5 sin ( x - pi//6) le b for all x , then ( a, b) is

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  18. cos^(2) (60^(@) - x) + cos^(2) (60^(@) +x) in

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  19. cos^(2) (60^(@) - x) + cos^(2) (60^(@) +x) in

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  20. sin^(2) x + 4 sin x+5 in [k, 5k ] rArr k =

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