AMU Engineering 2019 solved paper Solved Paper
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It a, b be two fixed positive integers such that f ( a + x ) = b + [ b 3 + 1 − 3 b 2 f ( x ) . + 3 b { f ( x ) − { f ( x ) } 3 } ] 1 ∕ 3 for all real x then f ( x ) is a periodic function with period
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