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[" 23.Let "f:R rarr R" be such that for all "x in R(2^(1+x)+2^(1-x)),f(x)" and "(3^(x)+3^(-x))" are in "],[" A.P.then the minimum value of "f(x)" is "],[[" (1) "0," [JEE-MAIN ONLINE-2020] "]]

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