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[" If "f(x)=cos(log x)" ,then "],[f(x^(2...

[" If "f(x)=cos(log x)" ,then "],[f(x^(2))f(y^(2))-(1)/(2)[f(x^(2)y^(2))+f((x^(2))/(y^(2)))]" is equal to "],[[" (1) "-2," (2) "-1],[" (3) "1/2," (4) "0]]

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