Let f(x)=a^ x (a>0) be written as f(x)=f_ 1 (x)+f_ 2 (x) , where f_ 1 (x) is an even…

Mathematics · JEE Main · NTA Exams — Sets, Relations and Functions

1. \(2 f_{1}(x+y) f_{2}(x-y)\)
2. \(2 f_{1}(x+y) f_{1}(x-y)\)
3. \(2 f_{1}(x) f_{2}(y)\)
4. \(2 f_{1}(x) f_{1}(y)\)

Answer

(D) 2 f_ 1 (x) f_ 1 (y)

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