f(x+1)=(-1)^{x+1} x-2 f(x) for x \in N and f(1)=f(1986). Compute the sum of digit of numbers (f(1)+f(2)+. . . . . . . f(1985))

JEE Advanced 2020 Concept Recapitulation Test 3 Paper 1

Question : 54 of 54

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f(x+1)=(−1)x+1x−2f(x) for x∈N and f(1)=f(1986). Compute the sum of digit of numbers (f(1)+f(2)+.......f(1985))

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