Wb JeeFunctionsWB JEE 2011MCQ+1 / -0.252011The even function of the following isA\(f(x) = {{{a^x} + {a^{ - x}}} \over {{a^x} - {a^{ - x}}}}\)B\(f(x) = {{{a^x} + 1} \over {{a^x} - 1}}\)C\(f(x) = x.\,{{{a^x} - 1} \over {{a^x} + 1}}\)D\(f(x) = {\log _2}(x + \sqrt {{x^2} + 1} )\)Check AnswerClear SelectionReveal AnswerShow Explanation
