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The number of real solution x of the equ...

The number of real solution x of the equation
`cos^(2)(x sin (2x))+(1)/(1+x^(2))=cos^(2)x+sec^(2)x` is

A

0

B

1

C

2

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
B
`cos^(2)(x sin 2x)+(1)/(1+x^(2))=cos^(2)x+sec^(2)x`
`LHS le2" "RHS ge2`
LHS=RHS=2 `+. X=0` only solution
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