16 sin x cosx cos 2x cos 4x cos 8x in...

`16 sin x cosx cos 2x cos 4x cos 8x in`

A

`[-1,1]`

B

`[-(1)/(4), (1)/(4)]`

C

`[-(3)/(4), (3)/(4)]`

D

`[-(sqrt(3))/(2), (sqrt(3))/(2)]`

Text Solution

Verified by Experts

The correct Answer is:

A

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If f(x) = cos x cos 2x cos 4x cos 8x cos 16 x then f^1((pi)/(4)) equals

A

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B

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The period of the function f(x)=( sin 8x cos x-sin 6x cos 3x )/(cos 2x cos x- sin 3x sin 4x ) is

A

`(pi)/4`

B

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C

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D

`(3pi)/2`

The general solution of the equation 8 cos x cos 2x cos 4x=sin 6x/sinx is

A

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B

`x =(2pi//7)+(pi//14), AA n in Z`

C

`x=(n p //7)+(pi//14), AA n in Z`

D

`x =(n pi )+(pi//14), AA n in Z`

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