f(x) = x-14, x ≥ 14 x < 14 f(x) = -x+14, x-14, x ≥ 0 f(x) = { _x+14₁ x < 0 x-14, x ≥ 0 x+14, x < 0 x < 14 f(x) = {-14, z > 14 x None of these

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Q: Ju 20²u c² of2 (r, t) = u(x,0) = 0, ut(x,0) = 0 u(0,t) = 0 u(1,t) = 0. da2(x, t) + XX , 00,

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