AAI ATC Junior Executive 2018 Shift 3 Paper

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Question : 89 of 120

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The solution of difference equation u_n+1 - 2u_ncos θ + u_n-1= 0 will be __________, where c₁ and c₂ are constants.

u_n = (c₁ + c₂n) sin n θ cos n θ
u_n = (c_q + c₂n) cos n θ + sin n θ
u_n = (-1)ⁿ [c₁ cos(n - 1)θ + c₂(n - 1)θ]
u_n = c₁ cos n θ + c₂ sin n θ

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