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Consider f, g and h be three real valued...

Consider f, g and h be three real valued function defined on R. Let `f(x)=sin3x+cosx,g(x)=cos3x+sinx` and `h(x)=f^(2)(x)+g^(2)(x).` Then,
The general solution of the equation h(x)=4, is

A

`(4n+1)pi//8`

B

`(8n+1)pi//8`

C

`(2n+1)pi//4`

D

`(7n+1)pi//4`

Text Solution

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The correct Answer is:
A
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