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[" R.Is "20." Ps-CBSE-MA-ADSG "" PANNACLE-Two Year Study Material "],[" 20.The number of values of x where the function "f(x)=cos x+cos(sqrt(2x))" antains its maximum "],[" is "],[[" (A) "0," (B) "1],[" (C) "2," (D) infinite "]]

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